1 Chronicles 4:42

“And some of them, even of the sons of Simeon, five hundred men went to Mount Seir, etc.] In the land of Edom: having for their captains Pelatiah, and Neariah, and Rephaiah, and Uzziel, the sons of Ishi; these four captains are said, by the ancient Rabbins, to be of the tribe of Manasseh, as Kimchi observes; (see <130524>1 Chronicles 5:24) but as the five hundred they were at the head of were of the sons of Simeon, the captains, no doubt, were of the same race.”

“mount Seir: Gen 36:8, Gen 36:9; Deu 1:2 1 Chronicles 4:43”

“A part of the Simeonites undertook a second war of conquest against Mount Seir. Led by four chiefs of the sons of Shimei (cf. Ch1 4:27), 500 men marched thither, smote the remainder of the Amalekites who had escaped, and they dwell there to this day (as in Ch1 4:41). מהם is more accurately defined by שׁ מבּני, and is therefore to be referred to the Simeonites in general, and not to that part of them only mentioned in Ch1 4:33 (Berth.). From the circumstance that the leaders were sons of Shimei, we may conclude that the whole troop belonged to this family. The escaped of Amalek are those who had escaped destruction in the victories of Saul and David over this hereditary enemy of Israel ( Sa1…”