[CCWoody]

God gave us His Law to teach us what is good. When we obey Him, we are righteous. When David obeyed God, he was righteous. When he sinned, he lost his righteousness. When he repented and returned to the Law, his righteousness before God was restored. His obedience and his sin were his own choices. So yes, it was up to him.

Had David died before he repented of his sins against the LORD would he have been forever lost to Him?

[malakhi]

Had David died before he repented of his sins against the LORD would he have been forever lost to Him?

No. (Remember, I don't believe in an eternal hell). Those who die lacking righteousness must atone for their sins in Gehinnom before they can enter the presence of God.