Adam Clarke on Amos 6:14

I will raise up against you a nation - The Assyrians under Pul, Tiglath-pileser, and Shalmaneser, who subdued the Israelites at various times, and at last carried them away captive in the days of Hosea, the last king of Israel in Samaria.

From the entering in of Hamath (on the north) unto the river of the wilderness - Besor, which empties itself into the sea, not far from Gaza, and was in the southern part of the tribe of Simeon.