David invites Barzillai to Jerusalem
David rewarded Barzillai by asking him to come to Jerusalem. Barzillai declined, and gave Chimham his reward.
Key passages
2 Sa 19:31–40

Then Barzillai the Gileadite came down from Rogelim and crossed with the king over the Jordan to escort him through the Jordan. Now Barzillai was very old, eighty years old. Now he had provided the king with food while he was staying at Mahanaim, for he was a very wealthy man. The king …