[constantius]

If you mean that the Church has incorporated ethical systems into its teachings, then I'd agree, but it would also be true of any other religion.

But if you mean that ethics came from orthodox Christianity, or is predicated on the existence of Christ, I'd have to ask to elaborate, though I'm sure I misunderstand.

Virtue ethics were developed by Plato, arguably Kantian and utilitarian systems attenpt to come to ethics through reason and don't mention religion.