2 Samuel 12:16, 22
2 Samuel 12:16 KJV
David therefore besought God for the child; and David fasted, and went in, and lay all night upon the earth.
2 Samuel 12:22 KJV
And he said, While the child was yet alive, I fasted and wept: for I said, Who can tell whether GOD will be gracious to me, that the child may live?