mother! ending explained

What happens

Mother burns the house down, killing everyone inside except Him. He takes the glowing crystal from her charred body and sets it back on its pedestal. The house is whole again, and a new woman wakes in the bed.

The last image

A new woman wakes in the restored bed and calls out for him, as the cycle starts over.

What it says

The ending shows that what you watched was one turn of a loop, not a single story. He creates, is worshipped, and consumes what sustains him, then begins again. That is why the film reads as a warning about art, faith and the planet at once.