I [am] thy servant; give me understanding, that I may know thy testimonies.
Ver. 125. I am thy servant, give me understanding] I have voluntarily hired myself unto thee, chosen the things that please thee, and taken hold of the covenant, loving to be thy servant, Isaiah 56:4; Isaiah 56:6. Now, this is all the wages I crave of thee, "Give me understanding," &c. This David speaketh, saith one, in a real and heavenly complement with his Maker.
That I may know thy testimonies] Work done in the dark must be undone again; David, therefore, would fully know his Master's mind, that he might acceptably do it.