Who committed a grave sin

Like King David who committed a grave sin against God, for he was anointed and chosen to become king of Israel; and against his neighbor, Uriah, for plotting his murder, to take his wife, Bathsheba, God in his goodness and mercies pardoned the offenses King David did; nevertheless, the punishment uttered by the Prophet Nathan against the kingdoms of Judah and Israel remained - they will experience lots of war in the Promised Land.  This event is also a reminder for us sinners, our sins are always forgiven yet there is always punishment stored for them - to purify once more ourselves, our motivation and freedom, and our wellness.

Nathan, the prophet, pointed out directly to King David his guilt without dilly-dally, he siad, "You are the man!" (Ikaw nga ang salarin!).  Then, afterward (isinungkawa) one by one, he narrated the gifts/graces God had given him:
     > anointed him as king of Israel
     > rescued from the former king Saul's hand
     > gave him the lord's (king Saul) house or kingdom
     > gave him many wives
as he added, that "if this were not enough . . ." God will give him more.  "I could count up for you still more."

See how generous God is to us.  He never loses graces upon graces towards us, if we obey Him, serve Him will full heart and sincerity.  But, man's desire cannot be satisfied.  The more he gets the more he wants.  After Fall, God cannot satisfy our hunger and thirst for anything except if we surrender to Him our appetite and desire - the freedom and free-will.