That's an easy question for most of us to answer. It's one of the few things that we can all agree on: it is wrong always and everywhere to burn to death anyone for any reason whatsoever.
But Bible believers aren't so sure about that. It must be OK to burn people to death or God wouldn't have commanded us to do so, as he clearly did in Leviticus 20:14, for example.
And if a man take a wife and her mother, it is wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you.Notice that God tells us to burn to death all three: man, wife, and mother-in-law. It may have been the man's idea, but we must burn all three anyway. (Couldn't we try counseling first?)
Is there anyone that really believes this is a good idea? Is there anyone who thinks it was a good idea a few thousand years ago? Will it be a good idea a few thousand years from now?
A god who commands people to burn other people to death is not a good god. This verse alone should be enough show that the Bible was not inspired by a kind and loving god.