The song of Hannah is a prophetic Psalm. It is poetry. and it is prophecy. It takes its place by the side of the songs of Miriam, Deborah, and the Virgin Mary, as well as those of Moses, David, Hezekiah, and other Psalmists and prophets whose inspired odes have been preserved in the Bible. The special feature which these songs have in common is, that springing from, and in their first conception relating to, incidents in the lives of the individuals who composed them, they branch out into magnificent descriptions of the Kingdom and glory of Christ, and the triumphs of the Church, of which those incidents were providentially designed to be the types. The perception of this is essential to the understanding of Hannah's song. Compare the marginal references throughout.

And Hannah prayed, and said - The Chaldee very properly says, And Hannah prayed in the spirit of prophecy; for indeed the whole of this prayer, or as it may be properly called oracular declaration, is a piece of regular prophecy, every part of it having respect to the future, and perhaps not a little - of it declaratory oil the Messiah's kingdom.
Dr. Hales has some very good observations on this prophetic song.
"This admirable hymn excels in simplicity of composition, closeness of connection, and uniformity of sentiment; breathing the pious effusions of a devout mind, deeply impressed with a conviction of God's mercies to herself in particular, and of his providential government of the world in general; exalting the poor in spirit or the humble-minded, and abasing the rich and the arrogant; rewarding the righteous, and punishing the wicked. Hannah was also a prophetess of the first class, besides predicting her own fruitfulness, 1-Samuel 2:5, (for she bore six children in all, 1-Samuel 2:21), she foretold not only the more immediate judgments of God upon the Philistines during her son's administration, 1-Samuel 2:10, but his remoter judgments 'upon the ends of the earth,' 1-Samuel 2:10, in the true spirit of the prophecies of Jacob, Balaam, and Moses. Like them, she describes the promised Savior of the world as a King, before there was any king in Israel; and she first applied to him the remarkable epithet Messiah in Hebrew, Christ in Greek, and Anointed in English, which was adopted by David, Nathan, Ethan, Isaiah, Daniel, and the succeeding prophets of the Old Testament; and by the apostles and inspired writers of the New. And the allusion thereto by Zacharias, the father of the Baptist, in his hymn, Luke 1:69, where he calls Christ a 'horn of salvation,' and the beautiful imitation of it by the blessed Virgin throughout in her hymn, Luke 1:46-55, furnishing the finest commentary thereon, clearly prove that Hannah in her rejoicing had respect to something higher than Peninnah her rival, or to the triumphs of Samuel, or even of David himself; the expressions are too magnificent and sublime to be confined to such objects. Indeed the learned rabbi, David Kimchi, was so struck with them that he ingenuously confessed that 'the King of whom Hannah speaks is the Messiah,' of whom she spake either by prophecy or tradition; for, continues he, 'there was a tradition among the Israelites, that a great zing should arise in Israel; and she seals up her song with celebrating this King who was to deliver them from all their enemies.' The tradition, as we have seen, was founded principally on Balaam's second and third prophecies, Numbers 24:7-17; and we cannot but admire that gracious dispensation of spiritual gifts to Hannah (whose name signifies grace) in ranking her among the prophets who should first unfold a leading title of the blessed Seed of the woman."
In the best MSS. the whole of this hymn is written in hemistich or poetic lines. I shall here produce it in this order, following the plan as exhibited in Kennicott's Bible, with some trifling alterations of our present version: -
1-Samuel 2:1. My heart exulteth in Jehovah; My horn is exalted in Jehovah. My mouth is incited over mine enemies, For I have rejoiced in thy salvation.
1-Samuel 2:2. There is none holy like Jehovah, For there is none besides thee; There is no rock like our God.
1-Samuel 2:3. Do not magnify yourselves, speak not proudly, proudly. Let not prevarication come out of your mouth; For the God of knowledge is Jehovah, And by him actions are directed.
1-Samuel 2:4. The bows of the heroes are broken, And the tottering are girded with strength.
1-Samuel 2:5. The full have hired out themselves for bread, And the famished cease for ever. The barren hath borne seven, And she who had many children is greatly enfeebled.
1-Samuel 2:6. Jehovah killeth, and maketh alive; He bringeth down to the grave, and bringeth up.
1-Samuel 2:7. Jehovah maketh poor, and maketh rich; He bringeth down, and he even exalteth.
1-Samuel 2:8. He lifteth up the poor from the dust; From the dunghill he exalteth the beggar, To make him sit with the nobles, And inherit the throne of glory. For to Jehovah belong the pillars of the earth, And upon them he hath placed the globe.
1-Samuel 2:9. The foot of his saints he shall keep, And the wicked shall be silent in darkness; For by strength shall no man prevail.
1-Samuel 2:10. Jehovah shall bruise them who contend with him; Upon them shall be thunder in the heavens. Jehovah shall judge the ends of the earth; And he shall give strength to his King. And shall exalt the horn of his Messiah.
It is not particularly stated here when Hannah composed or delivered this hymn; it appears from the connection to have been at the very time in which she dedicated her son to God at the tabernacle, though some think that she composed it immediately on the birth of Samuel. The former sentiment is probably the most correct.
Mine horn is exalted in the Lord - We have often seen that horn signifies power, might, and dominion. It is thus constantly used in the Bible, and was so used among the heathens. The following words of Horace to his jar are well known, and speak a sentiment very similar to that above: -
Tu spem reducis mentibus anxiis,
Viresque et addis Cornua pauperi.
Hor. Odar. lib. iii., Od. 21, v. 18.
Thou bringest back hope to desponding minds; And thou addest strength and horns to the poor man.
Paraphrastically expressed by Mr. Francis: -
"Hope, by thee, fair fugitive,
Bids the wretched strive to live.
To the beggar you dispense
Heart and brow of confidence."
In which scarcely any thing of the meaning is preserved.
My mouth is enlarged - My faculty of speech is incited, stirred up, to express God's disapprobation against my adversaries.

And Hannah (a) prayed, and said, My heart rejoiceth in the LORD, mine (b) horn is exalted in the LORD: my mouth is (c) enlarged over mine enemies; because I rejoice in thy salvation.
(a) After she had obtained a son by prayer she gave thanks.
(b) I have recovered strength and glory by the benefit of the Lord.
(c) I can answer them that criticize my barrenness.

And Hannah prayed and said,.... She had prayed before, but that was mental, this vocal; she had prayed and was answered, and had what she prayed for, and now she gives thanks for it; and thanksgiving is one kind of prayer, or a part of it; see 1-Timothy 2:1, wherefore though what follows is a song, it was expressed in prayer; and therefore it is said she prayed, and that by a spirit of prophecy, as the Targum; hence she is by the Jews (h) reckoned one of the seven prophetesses; and indeed in this song she not only relates the gracious experiences of divine goodness she had been favoured with, and celebrates the divine perfections, and treats of the dealings of God with men, both in a way of providence and grace; but prophesies of things that should be done hereafter in Israel, and particularly of the Messiah and of his kingdom. There is a great likeness in this song to the song of the Virgin Mary; compare 1-Samuel 2:1 with Luke 1:46 and 1-Samuel 2:2 with Luke 1:49 and 1-Samuel 2:4 with Luke 1:51,
my heart rejoiceth in the Lord: not in her son the Lord had given her, but in the goodness and kindness of the Lord in bestowing him on her, as an answer of prayer; which showed great condescension to her, the notice he took of her, the love he had to her, and his well pleasedness in her, and his acceptance of her prayer through Christ; she rejoiced not in her husband, nor in the wealth and riches they were possessed of, nor in any creature enjoyments, but in the Lord, the giver of all; nor in her religious services and sacrifices, but in the Lord Christ, through whom her duties were acceptable to God, and who was the antitype of the sacrifices offered; and it is in the person, offices, and grace of Christ, that we should alone rejoice: see Philippians 4:4 this joy of Hannah's was not worldly, but spiritual; not outward, but inward; not hypocritical, but real and hearty:
mine horn is exalted in the Lord: which supposes that she had been in a low estate, was crest fallen, and her horn was defiled in the dust, as Job says was his case, Job 16:15, when God had shut up her womb, and her adversary upbraided her with it, and provoked and fretted her; and when she was so full of grief, that she could not eat her food, and prayed in the bitterness of her soul; but now she could lift up her horn and her head, as horned creatures, to whom the allusion is, do, when they are lively and strong; now she could look pleasant and cheerful, and even triumph, being raised to an high estate, and greatly favoured of the Lord, to whom she ascribes this change of her state and circumstances: it was owing to his power and grace that she was thus strengthened and exalted; as it is owing to the same, that the people of God, who are in a low estate by nature, are raised out of it in conversion, and brought into an open state of grace and favour with God, and put into the possession of rich blessings and mercies, and have hope of eternal glory, on account of which they can exult and triumph:
my mouth is enlarged over mine enemies; meaning Peninnah, and those that provoked her, and upbraided her with her barrenness, to whom she was not able to make any reply; but now her mouth was opened, and she could speak largely, and did; not in a way of reproach and reviling, in retaliation for what she had met with from others; but in prayer to God, to whom she could come with open mouth, and use freedom and boldness, and plead with importunity, fervency, and in faith, and in praise and thanksgiving to him for the great and good things he had done for her, and would now freely and largely speak of them to others; to some, her friends, to their joy and pleasure; and to others, her enemies, to their grief and confusion:
because I rejoice in thy salvation; not only in temporal salvation wrought by the Lord for her, whereby she was delivered from the reproach of barrenness, through a son being given unto her; but in spiritual and eternal salvation, through the Messiah, she had knowledge of, and faith in, as appears from 1-Samuel 2:10, as all believers in him do, as it is contrived by the wisdom of God, wrought out by Christ, and applied by his Spirit; it being so great, so suitable, so perfect and complete, entirely free, and of an everlasting duration; see Psalm 20:5.
(h) T. Megillah, fol. 14. 1.

Hannah's heart rejoiced, not in Samuel, but in the Lord. She looks beyond the gift, and praises the Giver. She rejoiced in the salvation of the Lord, and in expectation of His coming, who is the whole salvation of his people. The strong are soon weakened, and the weak are soon strengthened, when God pleases. Are we poor? God made us poor, which is a good reason why we should be content, and make up our minds to our condition. Are we rich? God made us rich, which is a good reason why we should be thankful, and serve him cheerfully, and do good with the abundance he gives us. He respects not man's wisdom or fancied excellences, but chooses those whom the world accounts foolish, teaching them to feel their guilt, and to value his free and precious salvation. This prophecy looks to the kingdom of Christ, that kingdom of grace, of which Hannah speaks, after having spoken largely of the kingdom of providence. And here is the first time that we meet with the name MESSIAH, or his Anointed. The subjects of Christ's kingdom will be safe, and the enemies of it will be ruined; for the Anointed, the Lord Christ, is able to save, and to destroy.

HANNAH'S SONG IN THANKFULNESS TO GOD. (1-Samuel 2:1-11)
Hannah prayed, and said--Praise and prayer are inseparably conjoined in Scripture (Colossians 4:2; 1-Timothy 2:1). This beautiful song was her tribute of thanks for the divine goodness in answering her petition.
mine horn is exalted in the Lord--Allusion is here made to a peculiarity in the dress of Eastern women about Lebanon, which seems to have obtained anciently among the Israelite women, that of wearing a tin or silver horn on the forehead, on which their veil is suspended. Wives, who have no children, wear it projecting in an oblique direction, while those who become mothers forthwith raise it a few inches higher, inclining towards the perpendicular, and by this slight but observable change in their headdress, make known, wherever they go, the maternal character which they now bear.

Hannah's song of praise. - The prayer in which Hannah poured out the feelings of her heart, after the dedication of her son to the Lord, is a song of praise of a prophetic and Messianic character. After giving utterance in the introduction to the rejoicing and exulting of her soul at the salvation that had reached her (1-Samuel 2:1), she praises the Lord as the only holy One, the only rock of the righteous, who rules on earth with omniscience and righteousness, brings down the proud and lofty, kills and makes alive, maketh poor and maketh rich (1-Samuel 2:2-8). She then closes with the confident assurance that He will keep His saints, and cast down the rebellious, and will judge the ends of the earth, and exalt the power of His king (1-Samuel 2:9, 1-Samuel 2:10).
This psalm is the mature fruit of the Spirit of God. The pious woman, who had gone with all the earnest longings of a mother's heart to pray to the Lord God of Israel for a son, that she might consecrate him to the lifelong service of the Lord, "discerned in her own individual experience the general laws of the divine economy, and its signification in relation to the whole history of the kingdom of God" (Auberlen, p. 564). The experience which she, bowed down and oppressed as she was, had had of the gracious government of the omniscient and holy covenant God, was a pledge to her of the gracious way in which the nation itself was led by God, and a sign by which she discerned how God not only delivered at all times the poor and wretched who trusted in Him out of their poverty and distress, and set them up, but would also lift up and glorify His whole nation, which was at that time so deeply bowed down and oppressed by its foes. Acquainted as she was with the destination of Israel to be a kingdom, from the promises which God had given to the patriarchs, and filled as she was with the longing that had been awakened in the nation for the realization of these promises, she could see in spirit, and through the inspiration of God, the king whom the Lord was about to give to His people, and through whom He would raise it up to might and dominion.
The refusal of modern critics to admit the genuineness of this song is founded upon an a priori and utter denial of the supernatural saving revelations of God, and upon a consequent inability to discern the prophetic illumination of the pious Hannah, and a complete misinterpretation of the contents of her song of praise. The "proud and lofty," whom God humbles and casts down, are not the heathen or the national foes of Israel, and the "poor and wretched" whom He exalts and makes rich are not the Israelites as such; but the former are the ungodly, and the latter the pious, in Israel itself. And the description is so well sustained throughout, that it is only by the most arbitrary criticism that it can be interpreted as referring to definite historical events, such as the victory of David over Goliath (Thenius), or a victory of the Israelites over heathen nations (Ewald and others). Still less can any argument be drawn from the words of the song in support of its later origin, or its composition by David or one of the earliest of the kings of Israel. On the contrary, not only is its genuineness supported by the general consideration that the author of these books would never have ascribed a song to Hannah, if he had not found it in the sources he employed; but still more decisively by the circumstance that the songs of praise of Mary and Zechariah, in Luke 1:46. and Luke 1:68., show, through the manner in which they rest upon this ode, in what way it was understood by the pious Israelites of every age, and how, like the pious Hannah, they recognised and praised in their own individual experience the government of the holy God in the midst of His kingdom.

The first verse forms the introduction to the song. Holy joy in the Lord at the blessing which she had received impelled the favoured mother to the praise of God:
1 My heart is joyful in the Lord,
My horn is exalted in the Lord,
My mouth is opened wide over mine enemies:
For I rejoice in Thy salvation.
Of the four members of this verse, the first answers to the third, and the second to the fourth. The heart rejoices at the lifting up of her horn, the mouth opens wide to proclaim the salvation before which the enemies would be dumb. "My horn is high" does not mean 'I am proud' (Ewald), but "my power is great in the Lord." The horn is the symbol of strength, and is taken from oxen whose strength is in their horns (vid., Deuteronomy 33:17; Psalm 75:5, etc.). The power was high or exalted by the salvation which the Lord had manifested to her. To Him all the glory was due, because He had proved himself to be the holy One, and a rock upon which a man could rest his confidence.

Prayed - That is, praised God; which is a part of prayer. Rejoiceth - Or, leapeth for joy: for the words note not only inward joy, but also the outward demonstrations of it. In the Lord - As the author of my joy, that he hath heard my prayer, and accepted my son for his service. Horn - My strength and glory (which are often signified by an horn,) are advanced and manifested to my vindication, and the confusion of mine enemies. Mouth enlarged - That is, opened wide to pour forth abundant praises to God, and to give a full answer to all the reproaches of mine adversaries. Enemies - So she manifests her prudence and modesty, in not naming Peninnah, but only her enemies in the general. Salvation - Because the matter of my joy is no trivial thing, but that strange and glorious salvation or deliverance which thou hast given me from my oppressing care and grief, and from the insolencies and reproaches of mine enemies.