He said, “While the child was still alive, I fasted and wept, for I said, ‘Who knows whether the LORD will be gracious to me, that the child may live?’
Nathan, having delivered his message, staid not at court, but went home, probably to pray for David, to whom he had been preaching. God, in making use of him as an instrument to bring David to repentance, and as the herald both of mercy and judgment, put an honour upon the ministry, and magnified his word above all his name.
Commenting on 2 Samuel 12:15-25
But now he is dead, wherefore should I fast?.... And pray; it is to no purpose, no end can be thought to be answered by it: can I bring him back again? from the state of the dead, bring him to life by fasting, and praying, and weeping; that is not to e expected: I shall go to him; to the state of the dead...
Who can tell - David, and indeed all others under the Mosaic dispensation, were so satisfied that all God's threatenings and promises were conditional, that even in the most positive assertions relative to judgments, etc., they sought for a change of purpose.