Jamieson, Fausset and Brown on 2 Samuel 13:23-27

23-27. Absalom had sheep-shearers in Baal-hazor, which is beside Ephraim--A sheep-shearing feast is a grand occasion in the East. Absalom proposed to give such an entertainment at his estate in Baal-hazor, about eight miles northeast of Jerusalem near a town called Ephraim (Jos 11:10). He first invited the king and his court; but the king declining, on account of the heavy expense to which the reception of royalty would subject him [2Sa 13:25], Absalom then limited the invitation to the king's sons [2Sa 13:26], which David the more readily agreed to, in the hope that it might tend to the promotion of brotherly harmony and union.

2Sa 13:28-36. Amnon Is Slain.