For they came up with their cattle and their tents; they came in as locusts for multitude; both they and their camels were without number: and they came into the land to destroy it.
The Amalekites and other tribes that lived in the Arabian Desert east of Canaan joined the Midianites in their raids. These desert-dwellers were the "sons of the east" (Judges 6:3). The raids extended all the way to Gaza on the Mediterranean coast (Judges 6:4), far into Israel.