2 Samuel 15:10-12

But he sent secret messengers through all the tribes of Israel. They told the people, “When you hear the trumpets, say this: ‘Absalom is the king at Hebron!’ ” Absalom had invited two hundred men to go with him. So they went from Jerusalem with him, but they didn’t know what he was planning. While Absalom was offering sacrifices, he sent for Ahithophel, one of the people who advised David, to come from his hometown of Giloh. So Absalom’s plans were working very well. More and more people began to support him.