Why did He instead choose to deliver these backward people into the final darkness?

He waited an instant for the inevitable pain and final darkness.

Of all my witches you ask me so little about that final darkness.

Then she stumbled, and fell into a final and deeper darkness.

And worst of all, there was absolutely nothing he could do except wait for the final darkness to descend.

The place where the boy's sister had been killed and his mother snatched away into some final darkness.

Just before the final darkness, a great blaze of light burst in his head.

He'd watched the moonlight fade into that final deep darkness before dawn.

His mother knew the prophecies, and she said, 'In blue fire, the final darkness is banished.

"And the final darkness is the end of the world, right?"