that Yahweh sent a prophet to the children of Israel: and he said to them, Thus says Yahweh, the God of Israel, I brought you up from Egypt, and brought you forth out of the house of bondage;
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.