Judges 6:3, 5, 33

For whenever the Israelites planted crops, the Midianites and the Amalekites and the people of the East would come up against them.

For they would come up with their livestock and their tents; they would come like locusts in number—both they and their camels could not be counted—so that they laid waste the land as they came in.

Now all the Midianites and the Amalekites and the people of the East came together, and they crossed the Jordan and encamped in the Valley of Jezreel.