God, the creator of all, made us in his image.
Kanye, in "I Am A God", is saying that he too is a creator... We all are creators... We are all "gods".
It isn't an ego thing and it isn't a gimmick.
That's the point he was trying to make and you not understanding/not taking the time to understand seems to prove to me that you are letting your biases get the best of you. He's been pretty creative with his religious imagery so far this decade imo. Yet, there are people like you (and many of the people following the announcement of Yeezus) who just jump the gone and say "Damn, that black man is ****ing crazy. **** him for dissing God and Christianity!! Get him up out of here!!!" Y'all don't even try to understand why he called it that...
That message, mixed with the empowering production found within the song and all of Yeezus, is why the album is so great. He made an incredible statement.
I know all the motifs and the symbolism in Yeezus. I actually even studied the album in a sociology course last semester. It isn't about the messages Kanye is trying to send, it's about the way he is presenting it. As Kanye said himself in the BBC interview, in the Yeezus era he wasn't communicating his message properly and was screaming "LISTEN TO ME, I KNOW WHAT I'M TALKING ABOUT", instead of trying to get people to understand his views in a non-narcissistic way. To me, 'Yeezus' didn't feel like an artist trying to convey an important message, it felt like guy saying "I know more than you, so you must listen to me." I hope that what he said during the BBC interview is true and his music sounds less condescending this time around.