Is there iniquity in Gilead? surely they are vanity: they sacrifice bullocks in Gilgal; yea, their altars are as heaps in the furrows of the fields. Iniquity in Gilead - Gilgal and Gilead are equally iniquitous, and equally idolatrous. Gilead, which was beyond Jordan, had already been brought under subjection by Tiglath-Pileser. Gilgal, which was on this side Jordan, shall share the same fate; because it is now as idolatrous as the other.
Their altars are as heaps - They occur everywhere. The whole land is given to idolatry.