I gave your master’s house to you and your master’s wives into your arms. I gave you the house of Israel and Judah, and if that was not enough, I would have given you even more.
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
Wherefore hast thou despised the commandment of the Lord, to do evil in his sight?.... The commandment referred to is the law of God, particularly the sixth and seventh precepts of it, Exo 20:13; which David had shown no regard unto, and by his breaking them had slighted and despised them: thou hast killed Uriah the Hittite with the sword; and so had despised and...
I gave thee thy master's house, and thy master's wives--The phraseology means nothing more than that God in His providence had given David, as king of Israel, everything that was Saul's. The history furnishes conclusive evidence that he never actually married any of the wives of Saul. But the harem of the preceding king belongs, according to Oriental notions, as a part of the regalia to his successor.