You know, if I had the power of time travel, one of the things I'd do would be to go back and talk to Jesus directly. I suspect he'd have some interesting things to say.
I think this story would have been better had they asked God to help them come up with a better plan using their powers, instead of just having him step in and do the job for them. You can't fix your problems just by praying. You have to also do the work.
For what it's worth, the animation was fine, and the voice acting was decent. I liked the time travel dude the best.