In the Avengers movie, there is a scene inside a jet, where Captain America tells that "there is only one God", to Black Widow.
The exact dialogue goes like this:
Black Widow: These guys come from legend. They're basically gods.
Captain America: There's only one God, ma'am, and I'm pretty sure he doesn't dress like that.
So, what God does Captain America believe in?
Also, is Captain America a Christian, like the regular American?