2 Samuel 17:21 in the King James Version
And it came to pass, after they were departed, that they came up out of the well, and went and told king David, and said unto David, Arise, and pass quickly over the water: for thus hath Ahithophel counselled against you.
Context
20 Absalom’s servants came to the woman to the house; and they said, “Where are Ahimaaz and Jonathan?” The woman said to them, “They have gone over the brook of water.” When they had sought and could not find them, they returned to Jerusalem.
21 After they had departed, 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 counseled against you.”
22 Then David arose, and all the people who were with him, and they passed over the Jordan. By the morning light there lacked not one of them who had not gone over the Jordan.