2 Samuel 17:21-22

21And it came to pass after they had departed, that they came up out of the well, and went and told king David; and they said to David, Arise and pass quickly over the water; for thus has Ahithophel counselled against you.

22Then David arose, and all the people that were with him, and they passed over the Jordan; by the morning light there was not one of them missing that had not gone over the Jordan.