Komentarz do Diwrej ha-jamim II 10:1

for all Israel had come to Shechem to make him king In Shechem, which was Jeroboam’s place, which was in the territory of Ephraim. And Jeroboam was an Ephrathite, and all this was brought about by the Holy One, blessed be He, to fulfill His word, (I Kings 11:11): “I will surely tear the kingdom.”