Then David exclaimed to Nathan, “I have sinned against the Lord!” Nathan replied to David, “Yes, and the Lord has forgiven your sin. You are not going to die.
The Gibeonites said to him, “We have no claim to silver or gold from Saul or from his family, nor would we be justified in putting to death anyone in Israel.” David asked, “What then are you asking me to do for you?”
“Whoever kills any person, the murderer must be put to death by the testimony of witnesses; but one witness cannot testify against any person to cause him to be put to death.
And you must not accept a ransom for anyone who has fled to a town of refuge, to allow him to return home and live on his own land before the death of the high priest.