Matthew Henry No prayer can be acceptable before God which is not offered in the strength of our Redeemer or Divine Kinsman, through Him who took our nature upon him, that he might redeem us unto God, and restore the long-lost inheritance. May our hearts be much affected with the excellence of the word of God; and much affected with the evil of sin, and the danger we are in of it, and the danger we are in by it.
Matthew Poole’s Commentary Having prayed that God would keep him from sinful actions, he now prays that God would govern and sanctify his words and thoughts, wherein he had many ways offended, as he here implies, and oft in this book confesseth and bewaileth. And this he the rather doth, because this caution was very necessary to preserve him from presumptuous sins, which have their first rise in the thoughts, and thence proceed to words and expressions, before they break forth into actions.
Be acceptable in thy sight, i.e. be really good and holy, and so well-pleasing to thee.
My strength: O thou who hast hitherto strengthened me, both against my temporal and spiritual enemies, and whose gracious powerful assistance is absolutely necessary to keep me from my own corrupt inclinations, and from all temptations to sinful thoughts, and words, and actions.
My redeemer: this expression seems to be added emphatically, and with special respect to Christ, who was certainly much in David’s eyes, to whom alone this word Goel can here properly belong, as may appear See Poole “Job 19:25”, to which I refer the reader, and by whose blood and Spirit alone David could and did expect the blessings and graces for which he here prayeth.
Gill’s Exposition of the Entire Bible Let the words of my mouth,…. Meaning either his speech in common conversation, which should not be filthy and foolish, rotten and corrupt; but such as ministers grace to the hearer: or else his address to God, both in prayer and thanksgiving;
and the meditation of my heart; his inward thoughts continually revolving in his mind; or his meditation on the word of God and divine things; or mental prayer, which is not expressed, only conceived in the mind;
be acceptable in thy sight; as words and thoughts are, when they are according to the word of God; and as the sacrifices of prayer, whether vocal or mental, and of praise, are through Jesus Christ our Lord. The psalmist, in order to strengthen his faith in God, that he should be heard and answered in the petitions he put up, makes use of the following epithets:
O Lord, my strength, or “rock” (l), and my Redeemer; who had been the strength of his life and of his salvation, the rock on which he was built and established, and the Redeemer who had redeemed his life from destruction, and out of the hands of all his enemies, and from all his iniquities
In the end and present, is it not God’s opinion that ultimately matters? Not yours nor mine. We can clearly see why God personally called out David as a man after His heart.
This is where it all starts for each of us; thoughts and words. If we get it right there, we have a solid foundation to build upon. If not, watch out for destruction, ruin and collapse. For David built his life on the Rock and God certainly redeemed him countless times in the ‘here & now’ and the ‘ever & after’.
Let the words of my mouth and the meditation of my heart
be acceptable in your sight,
O LORD, my rock and my redeemer.