Psalms 119:125

125.I am thy servant, give me understanding. Here the prayer of the preceding verse is repeated. The repetition shows how ardently he wished the blessing prayed for, and how earnest and importunate he was in pleading with God for it. By the words he expresses still more plainly in what way it is that God teaches his own people — that he does so by illuminating with sound knowledge their understandings, which otherwise would be blind. It would profit us little to have the divine law sounding in our ears, or to have it exhibited in writing before our eyes, and to have it expounded by the voice of man, did not God correct our slowness of apprehension, and render us docile by the secret influence of his Spirit. We are not to suppose that David advances any meritorious claims before God when he boasts of being his servant. Men, indeed, commonly imagine that when we are previously well prepared, God then adds new grace, which they term subsequent grace. But the Prophet, so far from boasting of his own worth, rather declares how deep the obligations were under which he lay to God. It is not in the power of any man to make himself a servant of the Most High, nor can any man bring anything of his own as a price with which to purchase so great an honor. Of this the Prophet was well aware. He knew that there is not one of the whole human family who is worthy of being enrolled among that order; and therefore he does nothing more than adduce the grace he had obtained, as an argument that God according to his usual way would perfect what he had begun. In a similar manner he speaks in Psalms 116:6,

“I am thy servant and the son of thine handmaid:”

in which place it is abundantly manifest that he does not boast of his services, but only declares that he is one of the members of the Church.