John Gill Commentary Psalms 31

In thee, O Lord, do I put my trust
Not in any creature, but in the Lord Jehovah; the Targum, "in your Word"; the essential Logos, or Word, which was in the beginning with God, and was God, and so an equal object of faith, trust, and confidence, as Jehovah the Father.

This act includes a trusting all with God, body and soul, and the welfare of them, in time, and to eternity; and a trusting him for all things, both of providence and grace, and for both grace and glory, and is a continued act; for the psalmist does not say, "I have trusted", or "I will trust", but "I do"; and this was a very considerable thing to do in this time of his distress: the Lord is to be trusted in at all times.

let me never be ashamed ;
neither in this world, nor in that to come.

The believer has no reason to be ashamed of anything in this life but sin, and the imperfection of his own righteousness, and his trust in it; not of the Lord, in whom he trusts; nor of his Word, or Son, the Lord Jesus Christ, in whom he believes as his Saviour and Redeemer; nor of the Spirit, and his work of grace upon him; nor of his faith, hope, trust, and confidence in them; nor of the Gospel, the means of faith, and of the support of it; nor of the reproaches, afflictions, and sufferings, he endures for the sake of Christ and his Gospel; nor of his ordinances and his people.

Nor will he be ashamed hereafter at the coming of Christ, when he will appear in his righteousness, be clothed with white robes, have palms in his hands, and shall stand at his right hand, and be received into glory.

deliver me in your righteousness ;
not in his own, by which he knew there was no acceptance with God, no justification before him, nor any deliverance and salvation from sin and death; but by the righteousness of God, which the Son of God has wrought out, God the Father accepts of and imputes, and the Spirit of God reveals and applies; by this there is deliverance from sin, its guilt, and damning power, and from the curses and condemnation of the law, and from wrath to come, and from the second death.

Bow down your ear to me
Which is said after the manner of men, who, when they give attention, and listen to anything, stoop, and incline the ear; and this for God to do, as he sometimes does, is wonderful condescending grace!

deliver me speedily ;
which shows that he was in great danger, and his case required haste: the Lord does help right early, and is sometimes a present help in time of need, and delivers at once, as soon as the mercy is asked for;

be you my strong rock :
for shelter and security from enemies, as well as to build his everlasting salvation on, and to stand firmly upon, and out of danger;

for an house of defence to save me ;
both for an house to dwell in, Lord being the dwelling place of his people in all generations, and a strong habitation to which they may continually resort; and for protection and safety, their place of defence in him being the munition of rocks, a strong hold, and a strong tower from the enemy.

For thou [art] my rock and my fortress
What he prayed for he knew him to be, and to have been in times past, and could claim his interest in him; and therefore entreats that he would appear to be to him what he was in himself, and what he had been to him;

therefore for thy name's sake lead me, and guide me ;
either as a shepherd does his flock, gently, as they are able to bear it; into the green pastures of the word and ordinances, and beside the still waters of divine love, and to the overflowing fountain, and fulness of grace in himself; or as a general leads and guides his army; Christ being a Leader and Commander of the people, and the great Captain of their salvation, and who being at the head of them, they fear no enemy; or as a guide leads and directs such as are ignorant, and out of the way. The psalmist desires the Lord would lead him in the way of truth and paths of righteousness, according to his word; and guide him with his counsel, and by his Spirit, that so he might walk in the way in which he should go; and this he entreats he would do "for [his] name's sake"; not for any merit or worthiness in him; but for the glory of his own name, and for the honour of his free grace and mercy, for which the Lord often does many things; he defers his anger, he purges away the sins of his people, he forgives their transgressions, and remembers their sins no more, for his name's sake.

Pull me out of the net that they have laid privily for me
The Ziphites, and Saul, and his men; the former intending treacherously to betray him, and the latter encompassing him about in order to take him; and such was his danger and difficulty, that he saw none but God could deliver him; and he it is that breaks the nets of men, and the snares of the devil, which they secretly lay for the people of God, that they may stumble, and fall, and be taken, and delivers them out of them;

for you are my strength ;
the author, giver, and maintainer, both of his natural and spiritual strength; and who was able, and was only able, to pull him out of the net, and extricate him out of the difficulties in which he was.

Into thine hand I commit my spirit
Either his life, as to a faithful Creator and Preserver, who was the God of his life, gave him it, and upheld his soul in it; or his soul, and the eternal salvation of it, which he committed into the hand of the Lord his Redeemer, where he knew it would be safe, and out of whose hands none can pluck; or this he might say, as apprehensive of immediate death, through the danger he was in; and therefore commits his spirit into the hands of God, to whom he knew it belonged, and to whom it returns at death, and dies not with the body, but exists in a separate state, and would be immediately with him.

Our Lord Jesus Christ used the same words when he was expiring on the cross, and seems to have taken them from hence, or to refer to these, (Luke 23:46);

thou hast redeemed me, O Lord God of truth ;
which may be understood, either of the temporal redemption of his life from destruction in times past, which encouraged him to commit his life into the hands of God now, who was the same, and changed not; or of spiritual and eternal redemption from sin by the blood of Christ, and which the psalmist speaks of as if it was past, though it was to come, because of the certainty of it; just as Isaiah speaks of the incarnation and sufferings of Christ, (Isaiah 9:6) (53:4-6) ;

and of which he was assured, because the Lord, who had provided, appointed, and promised the Redeemer, was the God of truth, and was faithful to every word of promise; and Christ, who had engaged to be the Redeemer, was faithful to him that appointed him; and having an interest therefore in this plenteous redemption, by virtue of which he was the Lord's, he committed himself into his hands.