This is probably the worst abuse of the "but context!" argument I have ever seen. Consideration of context is one thing, but you are just making up a more palatable meaning because that's what you want to see. There is no actual context that changes what these verses mean, and your charitable interpretation of the word 'slave" is actually removing the true historical context.
Tinidril
It isn't a command, since humans don't have that ability. Hell is described by Jesus in Luke 16. Humans being human, all sorts of temperal tortures have been justified as doing the victim a favor by potentially saving them from eternal torture, but I don't think that is explicit in the text.
As an aside, over half of Christians (Catholics and Eastern Orthodox primarily) consider the teachings of the church to be the primary root of the faith, not "sola scriptura" as came in with protestantism. All sorts of religiously justified torture arose on both sides of that divide though.
Tell us you haven't read the Bible without telling us you haven't read the Bible.
Just in case you think that's all OT, Eternal torture was a NT invention. At least when OT God ordered you tortured and killed, that was the end of it.
What's more likely, a complete reversal of his world view, or a good PR team and some coaching. I'm not buying the first, especially considering that his Jeffrey Epstein association came after he left MS and started running his charitable foundation.