I believe that God is the Creator and we were created in His image and would do these things and greater, as Christ said.
I think that the bible was man made, although it was inspired by God to impart His truths to us, His children (creations), symbolically, because only in symbolic terms would mankind have even the barest of inklings of understanding of God's reasoning and wisdom. IMHO it would be akin to an ant trying to understand the reasoning and wisdom of a human.
Yet it was also assembled by men who had their own agendas push to gain control, to influence, and to consolidate power, and thus it "could have been" easily corrupted to their own ends by leaving certain things out, and in some cases entire books (gospels, etc.), or changing a word or phrase here and there that could explain the inconsistencies.