As for me, I said: ‘O Jehovah, show me favor. Do heal my soul, for I have sinned against you.’”​—Ps. 41:3, 4.

His acknowledging that he had “sinned against” God put David in a position to receive his favor once again. Hence, he could ask God to ‘heal his soul,’ or help in his recovery from illness.​—Compare Psalm 32:1-5.