Matthew Henry and continuators on Psalms 119:40

40 Behold, I have longed after thy precepts: quicken me in thy righteousness.

Here, 1. David professes the ardent affection he had to the word of God: "I have longed after thy precepts, not only loved them, and delighted in what I have already attained, but I have earnestly desired to know them more and do them better, and am still pressing forward towards perfection." Tastes of the sweetness of God's precepts will but set us a longing after a more intimate acquaintance with them. He appeals to God concerning this passionate desire after his precepts: "Behold, I have thus loved, thus longed; thou knowest all things, thou knowest that I am thus affected." 2. He prays for grace to enable him to answer this profession. "Thou hast wrought in me this languishing desire, put life into me, that I may prosecute it; quicken me in thy righteousness, in thy righteous ways, according to thy righteous promise." Where God has wrought to will he will work to do, and where he has wrought to desire he will satisfy the desire.