Then Nathan said to David, “You are that man! This is what the LORD, the God of Israel, says: ‘I anointed you king over Israel, and I delivered you from the hand of Saul.
It seems to have been a great while after David had been guilty of adultery with Bath-sheba before he was brought to repentance for it. For, when Nathan was sent to him, the child was born (Sa2 12:14), so that it was about nine months that David lay under the guilt of that sin, and, for aught that appears, unrepented of.
Commenting on 2 Samuel 12:1-14
And I gave thee thy master's house,.... Not his palace at Gibeah, but rather his family, his wives, servants, wealth, and riches, all being confiscated through the rebellion of Ishbosheth; or rather his kingdom he succeeded him in: and thy master's wives into thy bosom; though we read of no more than one that belonged to Saul, if he is meant by his master, excepting...
HE APPLIES IT TO DAVID, WHO CONFESSES HIS SIN, AND IS PARDONED. (Sa2 12:7-23) Nathan said to David, Thou art the man--These awful words pierced his heart, aroused his conscience, and brought him to his knees. The sincerity and depth of his penitent sorrow are evinced by the Psalms he composed (Psa 32:1-11; Psa. 51:1-19; Psa. 103:1-22).