Pretty good.
Great song, great animation. It wasn't that funny for the length of the movie, although the characters were good. I felt sorry for his son!
But, the fact that you wrote your own (fantastic) music for this flash takes it from a 7 to a 9 IMO. I can quote "king of the hill" on this topic:
"When will you people realise that you are not making Christianity any cooler, you are just making rock music worse!"
I also enjoy surfing down the reviews for the inevitable humourless bible-thumper who cannot see the difference between mocking the Lord God, and mocking the stupidity of SOME of his followers.