Backsliding (1992)

While in prison, Jack had two momentous experiences: he got religion, and met the woman who would become his wife. He and Alison are devoted to the idea of staying in God's good graces, so they have moved to a remote power station in central Australia, far from anything. Into this possibly idyllic arrangement comes a rootless young man who the power company has hired on to be the station's handyman. Tensions escalate between the men as their conflicting values rub up against one another.

Unfortunately the movie Backsliding is not yet available on HBO Max.