Then Absalom sent secret messengers throughout the tribes of Israel to say, "As soon as you hear the sound of the trumpets,1 then say, 'Absalom is king in Hebron.' "
References for 2 Samuel 15:10
Two hundred men from Jerusalem had accompanied Absalom. They had been invited as guests and went quite innocently, knowing nothing about the matter.
While Absalom was offering sacrifices, he also sent for Ahithophel2 the Gilonite, David's counselor,3 to come from Giloh,4 his hometown. And so the conspiracy gained strength, and Absalom's following kept on increasing.5
References for 2 Samuel 15:12
A messenger came and told David, "The hearts of the men of Israel are with Absalom."
References for 2 Samuel 15:13