I'm a believer and I liked the premise of staying faithful no matter what, but just like others have said, the sci-fi/multiverse part of the story could have been better explained like why was the Benefactor and his shifter minions shifting people in the first place? Since this is a fantasy why not come up with some reason such as God and Satan are competing for souls, but there are strict rules, neither can force a human to choose to worship them; and that every person has a version of themselves in the different multiverses but there is only one who is the true person and in order for Satan to "win" the soul ie the true person, he has to win all the versions of each individual concluding with the true soul; and Satan uses the shifting universes with his minions to help to deceive each of the true soul's other versions of self throughout the multiverses. And this would explain why the Benefactor is so desperately trying to deceive the final Kevin because if he can win the final true soul, that soul belongs to him forever. And because there are so many multiverses Satan needs the help so he has his secrect agents to get close to the marks to help with the deceiving, explaining the Gabriel character.
I don't think they need to explain the shifting technology, so it's super advanced technology, if we suspend belief for the beaming up in Star Trek we can do the same for this movie.
I don't think they need to explain the shifting technology, so it's super advanced technology, if we suspend belief for the beaming up in Star Trek we can do the same for this movie.