Woot. I have even more proofs, now. Amazing. This show just makes more and more sense.
Zengetsu: Holy Spirit: "If you just have faith in me. I will stop your grieving. I will lend you any help, I will lend you any strength, if you just believe in me. Trust me, as long as I'm here you'll never fight alone."
And there's no doubt. Quincy are Catholics. Sado, I am still not sure what he represents. Or Orihime. Geez, tough. But since Orihime helps heal people, she must have something to do with the healing nature of Christianity in people's lives. And charity and helping.