Well, this source says "Rich Man's House" was written and sung by members of the Poor People's Economic Human Rights Campaign.

I also found here (click) that there was a similar gospel song called "Enemy's Camp."

THE ENEMY'S CAMP

Well, I went to the enemy's camp and
I took back what he stole from me (x3)
I went to the enemy's camp and
I took back what he stole from me

You know
He's under my feet (x6)
Satan is under my feet

I went to the enemy's camp and
I took back what he stole from me (x3)
I went to the enemy's camp and
I took back what he stole from me

You know
He's under my feet (x6)
Satan is under my feet

I went to the enemy's camp and
I took back what he stole from me (x3)
I went to the enemy's camp and
I took back what he stole from me

You know
He's under my feet (x6)
Satan is under my feet

---

Audio here (click)
Video here (click)

-Joe-