He never had sexual relations with Her.One can not have a house full of concubines and not be living in casual sin with a very cavalier manner.
David never stopped with his women...so much for repenting bitterly and changing his way..
In fact even to his death bed , with the 16 year old bed warmer gained from a beauty contest.
Having multiple wives was not considered sin in Davids time.With one of his wives pleading to make her son the next king, while he was on his death bed with some young babe.
That is being very cavalier..about sin.
No. Davids strength was to admit he sinned when he was convicted by God through the prophet that he had sinned, He admired his wrong and then moved on.David strength was not avoiding sin, rather how to handle it and place sin in its proper perspective.
2 Samuel 12
13 So David said to Nathan, “I have sinned against the Lord.” And Nathan said to David, “The Lord also has put away your sin; you shall not die.
All Praise The Ancient of Days