That said, many orthodox Christians do tend towards a more moderated Neoplatonism except rather than referring to all matter as pulling the spirit down, they refer to `fallen nature' or `corrupted nature.' But where Neoplatonism really comes out in full force is in the heavily Calvinist forms of Christianity. I'm not certain you could successfully argue that Calvin himself was an Neoplatonist, but many modern sects that were influenced by his thinking do seem to think that matter is of no account.
But to be fair, the dualism that does exist in some forms of modern Christianity is almost entirely at the popular level rather than at the dogmatic level. (The notable exception being some of the Christian sects that are moving to various forms of theological liberalism.)
I think the real reason homosexuality gets a special place as a very heinous sin is really more dependent on Aristotle than Plato. Sexual sins are given a special prominence in the New Testament. As sex in the marital relationship is held out as a symbol of the relationship between Christ and the Church, any perversion of that relationship is already worthy of special note. Many early Church documents suggest severe liturgical discipline for sexual immorality. If you add to this a bit of natural law theory, you're left with a teleologically twisted form of a very notable sort of sin.
Ignatius of Antioch lived roundabout 35 to 110 AD. So I think he and the other really early Christians were a bit too early to reject Neoplatonism. --"Everything is vague to a degree you do not realize till you have tried to make it precise." -- Bertrand Russell[ Parent ]
And some people, like me, think there is less difference between Platonism and Neoplatonism than other people claim. Sure, there are differences. I won't deny that. I just don't think they're all that substantial.