The requirement to execute homosexuals is in Leviticus.
Christianity would be alright if any of them actually read their own book…
Not really. Even if we throw out the OT, Paul, and the rest just leaving us with the 4 core gospels we are in a bad position. Jesus was cribbing off better minds and the ideals he stood for don’t leave you better off. Says a lot that probably the most quoted story, the stoning of the adulteress, is a 3rd century fraud that contradicts everything else Jesus said.
Biblical Jesus was an ethno-nationalist who supported Phrassiee authority and demanded that his followers love him above all else.