Hm, people are complaining about this? Hard to see why. Noah is a perfectly respectable re-telling of the Noah's Ark story. They add in a few elements for good reason, to make the story make more sense. The characters don't refer to God as much as they refer to “The Creator,” but it's not like there's any question as to who they're referring to.
BTW, Saw Captain America: The Winter Soldier the week before last. Good, rousing stuff! The characters are pushed to the limit and are exhausted by the end, just the way a good adventure film should be. Looks like Cap has gotten himself a girlfriend midway through the film. I talked about her with a buddy of mine and we agreed that she's no Lois Lane-type who needs to be rescued all the time.