2 Samuel 15:10-13

10Then Absalom sent agents throughout the tribes of Israel with this message: “When you hear the sound of the ram’s horn, you are to say, ‘Absalom has become king in Hebron!’”

11Two hundred men from Jerusalem went with Absalom. They had been invited and were going innocently, for they did not know the whole situation.

12While he was offering the sacrifices, Absalom sent for David’s adviser Ahithophel the Gilonite, from his city of Giloh. So the conspiracy grew strong, and the people supporting Absalom continued to increase.

13Then an informer came to David and reported, “The hearts of the men of Israel are with Absalom.”