They… didn’t… make a mockery.. out of the last supper. Even if this was inspired by the last supper - which it wasn’t, but even in the event that it was - it wouldn’t have been a mockery unless you think queer people are somehow intrinsically a mockery. Which then is your own issue, not ours. Coincidentally even Da Vincis painting is not accurate to its biblical source, so why isn’t that a mockery? Could it perhaps be that you either don’t know that which you profess publicly to believe in,