What Is the Voice of the Song Mercy by Kanye West Saying?

I lot of speculation to the verse in the song Marcy by Kanye West feat. Big Sean, 2Chainz, it sounds like a devil rant or someone mumbling, here is the answer.

Kanye West call himself a genius, he is such a big fan of Music he gets inspired by the greatest artist and different genres of music, must of the time he used sample from old songs and he gives it a nice beat put the sample in the hook or at the beginning of the song if is related to the theme.