2 Samuel 15:6, 10

Absalom did this with everyone who came to the king for judgment, and so he stole the hearts of all the people of Israel.

But while he was there, he sent secret messengers to all the tribes of Israel to stir up a rebellion against the king. “As soon as you hear the ram’s horn,” his message read, “you are to say, ‘Absalom has been crowned king in Hebron.’”