Come, let us rejoice before Jehovah. This psalm is suited for the Sabbath, when we know that the religious assemblies were more particularly convened for the worship of God. It is not individuals among the godly whom he exhorts to celebrate the divine praises in private; he enjoins these to be offered up in the public meeting. By this he showed that the outward worship of God principally consisted in the sacrifice of praise, and not in dead ceremonies. He enjoins haste upon them; by which they might testify their alacrity in this service. For the Hebrew word qdm, kadam, in the second verse, which I have rendered, let us come before, etc., means to make haste. He calls upon them to speed into the presence of God; and such an admonition was needed, considering how naturally backward we are when called by God to the exercise of thanksgiving. This indirect charge of indolence in the exercise, the Psalmist saw it necessary to prefer against God's ancient people; and we should be made aware that there is just as much need of a stimulus in our own case, filled as our hearts are with similar ingratitude. In calling them to come before God's face, he uses language which was also well fitted to increase the ardor of the worshippers; nothing being more agreeable than to offer in God's own presence such a sacrifice as he declares that he will accept. He virtually thus says, in order to prevent their supposing the service vain, that God was present to witness it. I have shown elsewhere in what sense God was present in the sanctuary.

O come, let us sing unto the Lord - The word here rendered come, means properly "go;" but it is used here, as it often is, as a formula of invitation, in calling on others to share in what is done by the speaker. It is here to be understood as used by one portion of an assembly convened for worship addressing the other portion, and calling on them to unite in the praise of God.
Let us make a joyful noise - The word used here means commonly to make a loud noise, to shout, Job 30:5. It is especially used
(a) of warlike shouts, Joshua 6:16; 1-Samuel 17:20;
(b) of the shout of triumph, Judges 15:14;
(c) of the sound or clangor of a trumpet, Numbers 10:9; Joel 2:1.
It may thus be used to denote any shout of joy or praise. In public worship it would denote praise of the most animated kind.
To the Rock of our salvation - The strong ground of our confidence; the basis of our hope; our security. See the notes at Psalm 18:2.

O come, let us sing - Let us praise God, not only with the most joyful accents which can be uttered by the voice; but let us also praise him with hearts tuned to gratitude, from a full sense of the manifold benefits we have already received.
The rock of our salvation - The strong Fortress in which we have always found safety, and the Source whence we have always derived help for our souls. In both these senses the word rock, as applied to God, is used in the Scriptures.

O come, let us sing unto the LORD: let us make a (a) joyful noise to the rock of our salvation.
(a) He shows that God's service stands not in dead ceremonies, but chiefly in the sacrifice of praise and thanksgiving.

O come, let us sing unto the Lord,.... To Jehovah the Messiah, the Lord our righteousness; setting forth, in songs of praise, the glory of his person, the riches of his grace, and our thankfulness to him for spiritual mercies by him: Christ is to be the subject of our spiritual songs, and is the person to whose honour and glory they should be directed: in the New Testament we are instructed to sing unto the Lord, the Lord Christ, Ephesians 5:19, and this is what Pliny (a) tells Trajan, the Roman emperor, the Christians in his time did; they sung a hymn to Christ, as to a God:
let us make a joyful noise to the Rock of our salvation; to Christ, the Rock, 1-Corinthians 10:4, a Rock, for height, being higher than the saints, than the kings of the earth, than the angels in heaven, than the heavens themselves; for strength, being the mighty God, and mighty Saviour; for shelter, being the saints security from avenging justice and wrath to come: a Rock, on which the church and all believers are built, and which endures for ever; "the Rock of salvation", being the author of spiritual and eternal salvation, and the strength and security of it; not only is he strong to do it, but, being done by him, it is safe in him; wherefore shouts of joy and songs of praise are due unto him. This shows that vocal singing is meant, singing with an harmonious and musical voice; and that social singing, or singing in concert together, is intended. The Septuagint renders it, "to God our Saviour", Luke 1:47.
(a) Ep. l. 10. ep. 97.

Whenever we come into God's presence, we must come with thanksgiving. The Lord is to be praised; we do not want matter, it were well if we did not want a heart. How great is that God, whose the whole earth is, and the fulness thereof; who directs and disposes of all!, The Lord Jesus, whom we are here taught to praise, is a great God; the mighty God is one of his titles, and God over all, blessed for evermore. To him all power is given, both in heaven and earth. He is our God, and we should praise him. He is our Saviour, and the Author of our blessedness. The gospel church is his flock, Christ is the great and good Shepherd of believers; he sought them when lost, and brought them to his fold.

David (Hebrews 4:7) exhorts men to praise God for His greatness, and warns them, in God's words, against neglecting His service. (Psalm 95:1-11)
The terms used to express the highest kind of joy.
rock--a firm basis, giving certainty of salvation (Psalm 62:7).

Jahve is called the Rock of our salvation (as in Psalm 89:27, cf. Psalm 94:22) as being its firm and sure ground. Visiting the house of God, one comes before God's face; קדּם פּני, praeoccupare faciem, is equivalent to visere (visitare). תּודה is not confessio peccati, but laudis. The Beth before תודה is the Beth of accompaniment, as in Micah 6:6; that before זמרות (according to 2-Samuel 23:1 a name for psalms, whilst מזמר can only be used as a technical expression) is the Beth of the medium.