I'm a Christian. I'm a supporter of the Greens. The two are by no means incompatible.
I believe firmly that church and state must remain separate bodies. They do, of course, interact. Religious organisations must conform to the laws of the land. Conversely, they are entitled, as much or as little as any other group, to provide input to the democratic process and to provide feedback to Government. Neither side of the ledger should abuse this relationship.