Matthew Poole and continuators on 2 Samuel 15:10

10 ¶ But Absalom sent spies throughout all the Tribes of Israel, saying, Assoon as ye hear the sound of the trumpet , then ye shall say, Absalom reigneth in Hebron.

From Hebron. Or, had sent from Ierusalem, that when he went to Hebron, they should go into the several Tribes to sift the people, and to dispose them to Absalom's party, and acquaint them with his success.

Which I shall take care to have sounded in several parts by other persons; and when that is done, you shall inform them of the reason of it. Or, as soon as you understand that the Trumpet was Sounded at Hebron; partly, to call the people together for my assistance; and partly, to celebrate my Inauguration to the Kingdom, which you shall speedily know by messengers whom I shall send to you to that end.