| Barnes' Notes on the Bible Stablish thy word unto thy servant - Confirm it; make it seem firm and true; let not my mind be vacillating or skeptical in regard to thy truth. This seems to be a prayer against the influence of doubt and scepticism; a prayer that doubts might not be suffered to spring up in his mind, and that the objections and difficulties of scepticism might have no place there. There is a class of people whose minds are naturally skeptical and unbelieving, and for such people such a prayer is especially appropriate. For none can it be improper to pray that the word of God may always seem to them to be true; that their minds may never be left to the influence of doubt and unbelief. Who is devoted to thy fear - literally, "Who," or which, "to thy fear." This may refer either to the author of the psalm, or to the word of God. It may mean that he was among those who feared - that is, worshipped God; or, that the word of God had reference to the "fear," that is, to the worship of God, or was designed to secure that. The construction seems to demand the latter interpretation; and then the prayer is, that God would confirm his faith in that "word" - in that revealed truth - which was designed to secure the worship of God.
Clarke's Commentary on the BibleStablish thy word - Fulfil the promises thou hast made to me.
Gill's Exposition of the Entire BibleStablish thy word unto thy servant,.... Either God's word of promise, which never fails, is firm and stable in Christ; and the sense is, that God would assure him of the fulfilment of it, and give him a strong faith and firm belief of it; for otherwise the word of the Lord cannot be surer or more stable than it is: or else the word of his grace; and then the sense is, that he might be established in it, and the truths of it, and be established by it; for the word is a means of establishment, and a good thing it is to have the heart established with grace, with the doctrine of grace, Hebrews 13:9; who is devoted to thy fear; who served the Lord with reverence and godly fear; who feared the Lord and his goodness; that grace being a reigning one in his heart, and ever before his eyes. Or, "which is unto thy fear" (d); that is, which word is unto thy fear; which leads unto it, and has a tendency to promote and increase it; and so is a commendation of the word of God from this effect of it. (d) "quod ad timorem tuum", Pagninus, Montanus; "quod ad timorem tui facit", Musculus; "et ducit", Schmidt; "quod datum est ad timorem tui", Michaelis.
Geneva Study BibleStablish thy word unto thy servant, who is devoted to thy fear.
Wesley's Notes 119:38 Stablish - Confirm and perform thy promises.
Scofield Reference NotesMargin fear See Scofield Note: "Ps 19:9".
Jamieson-Fausset-Brown Bible Commentary38. who is devoted to thy fear-or better, "which (that is, Thy word) is for Thy fear," for producing it. "Which is to those who fear Thee." God's word of promise belongs peculiarly to such (compare Ge 18:19; 1Ki 2:4; 8:25) [Hengstenberg].
Matthew Henry's Concise Commentary119:33-40 Teach me thy statutes, not the mere words, but the way of applying them to myself. God, by his Spirit, gives a right understanding. But the Spirit of revelation in the word will not suffice, unless we have the Spirit of wisdom in the heart. God puts his Spirit within us, causing us to walk in his statutes. The sin here prayed against is covetousness. Those that would have the love of God rooted in them, must get the love of the world rooted out; for the friendship of the world is enmity with God. Quicken me in thy way; to redeem time, and to do every duty with liveliness of spirit. Beholding vanity deadens us, and slackens our pace; a traveller must not stand gazing upon every object that presents itself to his view. The promises of God's word greatly relate to the preservation of the true believer. When Satan has drawn a child of God into worldly compliances, he will reproach him with the falls into which he led him. Victory must come from the cross of Christ. When we enjoy the sweetness of God's precepts, it will make us long for more acquaintance with them. And where God has wrought to will, he will work to do.
Matthew Henry's Whole Bible CommentaryVerse 38 Here is 1. The character of a good man, which is the work of God's grace in him; he is God's servant, subject to his law and employed in his work, that is, devoted to his fear, given up to his direction and disposal, and taken up with high thoughts of him and all those acts of devotion which have a tendency to his glory. Those are truly God's servants who, though they have their infirmities and defects, are sincerely devoted to the fear of God and have all their affections and motions governed by that fear; they are engaged and addicted to religion. 2. The confidence that a good man has towards God, in dependence upon the word of his grace to him. Those that are God's servants may, in faith and with humble boldness, pray that God would establish his word to them, that is, that he would fulfil his promises to them in due time, and in the mean time give them an assurance that they shall be fulfilled. What God has promised we must pray for; we need not be so aspiring as to ask more; we need not be so modest as to ask less. | 
