This Bible contradiction is from the Skeptic's Annotated Bible.

Verses

They should be killed

Leviticus 20:13 View context

If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood shall be upon them.

They should be exiled

1 Kings 15:11-12 View context

And Asa did that which was right in the eyes of the LORD, ... he took away the sodomites out of the land.