Thy word is a lamp to my feet. In this verse the Psalmist testifies that the Divine Law was his schoolmaster and guide in leading a holy life. He thus, by his own example, prescribes the same rule to us all; and it is highly necessary to observe this rule; for while each of us follows what seems good in his own estimation, we become entangled in inextricable and frightful mazes. The more distinctly to understand his intention, it is to be noted, that the word of God is set in opposition to all human counsels. What the world judges right is often crooked and perverse in the judgment of God, who approves of no other manner of living, than that which is framed according to the rule of his law. It is also to be observed, that David could not have been guided by God's word, unless he had first renounced the wisdom of the flesh, for it is only when we are brought to do this, that we begin to be of a teachable disposition. But the metaphor which he uses implies something more; namely, that unless the word of God enlighten men's path, the whole of their life is enveloped in darkness and obscurity, so that they cannot do anything else than miserably wander from the right way; and again, that when we submit ourselves with docility to the teaching of God's law, we are in no danger of going astray. Were there such obscurity in God's word, as the Papists foolishly talk about, the commendation with which the prophet here honors the law would be altogether undeserved. Let us, then, be assured that an unerring light is to be found there, provided we open our eyes to behold it. The Apostle Peter (2-Peter 1:19) has more plainly expressed the same sentiment, when he commends the faithful for taking heed to the word of prophecy, "as unto a light that shineth in a dark place."

Thy word is a lamp unto my feet - This begins a new portion of the psalm, indicated by the Hebrew letter Nun (נ n), equivalent to our "n." The margin here is "candle." The Hebrew word means a light, lamp, candle. The idea is, that the word of God is like a torch or lamp ton man in a dark night. It shows him the way; it prevents his stumbling over obstacles, or failing down precipices, or wandering off into paths which would lead into danger, or would turn him away altogether from the path to life. Compare the notes at 2-Peter 1:19.
And a light unto my path - The same idea substantially is presented here. It is a light which shines on the road that a man treads, so that he may see the path, and that he may see any danger which may be in his path. The expression is very beautiful, and is full of instruction. He who makes the word of God his guide, and marks its teachings, is in the right way. He will clearly see the path. He will be able to mark the road in which he ought to go, and to avoid all those by-paths which would lead him astray. He will see where those by-roads turn off from the main path - often at a very small angle, and so that there seems to be no divergence. He will see any obstruction which may lie in his path; any declivity or precipice which may be near, and down which, in a dark night, one might fall. Man needs such a guide, and the Bible is such a guide. Compare the notes at Psalm 119:9.

Thy word is a lamp - This is illustrated thus by Solomon, Proverbs 6:23 : "The commandment is a lamp; and the law is light; and reproofs of instruction are the way of life." God's word is a candle which may be held in the hand to give us light in every dark place and chamber; and it is a general light shining upon all his works, and upon all our ways.

NUN. Thy word [is] a (a) lamp unto my feet, and a light unto my path.
(a) Of ourselves we are but darkness and cannot see unless we are lightened with God's Word.

NUN.--The Fourteenth Part.
NUN. Thy word is a lamp unto my feet,.... The same Solomon says of the law and commandment, the preceptive part of the word, Proverbs 6:23; and the Septuagint and Arabic versions render it "law" here. This shows a man what is his duty, both towards God and man; by it is the knowledge of sin: this informs what righteousness that is God requires of men; by the light of it a man sees his own deformity and infirmities, the imperfection of his obedience, and that he needs a better righteousness than his own to justify him in the sight of God; it is a rule of walk and conversation; it directs what to do, and how to walk. The Gospel part of the word is a great and glorious light; by which men come to have some knowledge of God in Christ, as a God gracious and merciful; of Christ, his person, offices, and grace; of righteousness, salvation, and eternal life by him; and it teaches men to live soberly, righteously, and godly. The whole Scripture is a light shining in a dark place; a lamp or torch to be carried in the hand of a believer, while he passes through this dark world; and is in the present state of imperfection, in which he sees things but darkly. This is the standard of faith and practice; by the light of this lamp the difference between true and false doctrine may be discerned; error and immorality may be reproved, and made manifest; the way of truth and godliness, in which a man should walk, is pointed out; and by means of it he may see and shun the stumbling blocks in his way, and escape falling into pits and ditches; it is a good light to walk and work by. The Targum is,
"thy word is as a light that shines to my feet.''
It follows,
and a light unto my path; the same thing in other words. Now it should be observed, that the word of God is only so to a man whose eyes are opened and enlightened by the Spirit of God, which is usually done by means of the word; for a lamp, torch, candle, or any other light are of no use to a blind man.

The word of God directs us in our work and way, and a dark place indeed the world would be without it. The commandment is a lamp kept burning with the oil of the Spirit, as a light to direct us in the choice of our way, and the steps we take in that way. The keeping of God's commands here meant, was that of a sinner under a dispensation of mercy, of a believer having part in the covenant of grace. The psalmist is often afflicted; but with longing desires to become more holy, offers up daily prayers for quickening grace. We cannot offer any thing to God, that he will accept but what he is pleased to teach us to do. To have our soul or life continually in our hands, implies constant danger of life; yet he did not forget God's promises nor his precepts. Numberless are the snares laid by the wicked; and happy is that servant of God, whom they have not caused to err from his Master's precepts. Heavenly treasures are a heritage for ever; all the saints accept them as such, therefore they can be content with little of this world. We must look for comfort only in the way of duty, and that duty must be done. A good man, by the grace of God, brings his heart to his work, then it is done well.

NUN. (Psalm 119:105-112).
Not only does the Word of God inform us of His will, but, as a light on a path in darkness, it shows us how to follow the right and avoid the wrong way. The lamp of the Word is not the sun. He would blind our eyes in our present fallen state; but we may bless God for the light shining as in a dark place, to guide us until the Sun of Righteousness shall come, and we shall be made capable of seeing Him (2-Peter 1:19; Revelation 22:4). The lamp is fed with the oil of the Spirit. The allusion is to the lamps and torches carried at night before an Eastern caravan.

The eightfold Nun. The word of God is his constant guide, to which he has entrusted himself for ever. The way here below is a way through darkness, and leads close past abysses: in this danger of falling and of going astray the word of God is a lamp to his feet, i.e., to his course, and a light to his path (Proverbs 6:23); his lamp or torch and his sun. That which he has sworn, viz., to keep God's righteous requirements, he has also set up, i.e., brought to fulfilment, but not without being bowed down under heavy afflictions in confessing God; wherefore he prays (as in Psalm 119:25) that God would revive him in accordance with His word, which promises life to those who keep it. The confessions of prayer coming from the inmost impulse of his whole heart, in which he owns his indebtedness and gives himself up entirely to God's mercy, he calls the free-will offerings of his mouth in Psalm 119:108 (cf. Psalm 50:14; 19:15). He bases the prayer for a gracious acceptance of these upon the fact of his being reduced to extremity. "To have one's soul in one's hand" is the same as to be in conscious peril of one's life, just as "to take one's soul into one's hand" (Judges 12:3; 1-Samuel 19:5; 1-Samuel 28:21; Job 13:14) is the same as to be ready to give one's life for it, to risk one's life.
(Note: Cf. B. Taanth 8a: "The prayer of a man is not answered אלא אם כן משׂים נפשׁו בכפו, i.e., if he is not ready to sacrifice his life.")
Although his life is threatened (Psalm 119:87), yet he does not waver and depart from God's word; he has taken and obtained possession of God's testimonies for ever (cf. Psalm 119:98); they are his "heritage," for which he willingly gives up everything else, for they (המּה inexactly for הנּה) it is which bless and entrance him in his inmost soul. In Psalm 119:112 it is not to be interpreted after Psalm 19:12 : eternal is the reward (of the carrying out of Thy precepts), but in Psalm 119:33 עקב is equivalent to לעד, and Psalm 119:44 proves that Psalm 119:112 need not be a thought that is complete in itself.