It's a spoof, and chill out Christianity haters
This is clearly a spoof comedy, anyone who thinks otherwise is just a moron. So chill religion haters because this is a film for YOU. Those who can't believe they would choose this cast to make a Noah film... again... it's a spoof comedy. Don't see it if you feel uncomfortable with religion jokes.
Also, what's with all the Christianity bashing? GET A CLUE! The story of Noah is told in Judaism as well as Islam. The Old Testament exists in each one of those religions in one form or another. Islam even has New Testament Christianity stuff. Islam has the old testament up to the story of Abraham exactly as the Bible and the Torah explain things. It's when Abraham is ordered to have children that things begin to deviate between Islam and the other two religions. Jesus Christ is considered the second most important prophet in Islam, under Muhammed of course.
If you're going to get mad at Christianity over this movie, at least have the common sense to include all religions who carry these beliefs word-for-word. It makes no sense to hate on just Christianity for beliefs that 2 other religions have.