You defeated our enemies in the past (Ps 83:9-83:12)

“Do to them as you did to Midian.

Do as you did to Sisera.

Do as you did to Jabin at the river Kishon.

You destroyed them at En-dor.

They became dung for the ground.

Make their nobles like Oreb and Zeeb.

Make all their princes like Zebah and Zalmunna.

They said.

‘Let us take the pastures of God

For our own possession.’”

The psalmist recounted the times in the past when Yahweh had helped them against enemies. He was calling on Yahweh to act now as he had in the past. Gideon defeated the Midianites in Judges, chapter 7. Deborah defeated General Sisera and King Jabin in Judges, chapter 4. En-dor was a Canaanite city. Gideon defeated Oreb and Zeeb, 2 captains of the Midianites, in Judges, chapter 7. Gideon also defeated Zebah and Zalmunna in Judges, chapter 8. Obviously this psalmist had the Book of Judges or something similar at his disposal, as he recounted the deeds of Deborah and Gideon before the time of King Saul and King David.