Charles Ellicott Commentary 2 Samuel 13:23

"And it came to pass after two full years, that Absalom had sheep-shearers in Baal-hazor, which is beside Ephraim: and Absalom invited all the king`s sons." — 2 Samuel 13:23 (ASV)

Absalom had sheepshearers. —Absalom had now silently nourished his revenge for “two full years.” No doubt he also chose to give his father full opportunity to punish Amnon’s iniquity if he would; and by this long, quiet waiting, he sufficiently disarmed suspicion that he was able to carry out his purpose. Sheepshearing always was, and still is, a time of feasting (Compare to 1 Samuel 25:2). The locations of Baalhazor and Ephraim are quite unknown, but Absalom’s property was probably not many miles from Jerusalem.