2 Samuel 15:10-13

10Then Absalom sent spies throughout all the tribes of Israel, saying, “As soon as you hear the sound of the trumpet, then you shall say, ‘Absalom reigns in Hebron!’ ”

11And with Absalom went two hundred men invited from Jerusalem, and they went along innocently and did not know anything.

12Then Absalom sent for Ahithophel the Gilonite, David’s counselor, from his city—from Giloh—while he offered sacrifices. And the conspiracy grew strong, for the people with Absalom continually increased in number.

13Now a messenger came to David, saying, “The hearts of the men of Israel are with Absalom.”