Taking from this parallel of another world religion:
21 From that time Jesus began to show to His disciples that He must go to Jerusalem, and suffer many things from the elders and chief priests and scribes, and be killed, and be raised the third day.
22 Then Peter took Him aside and began to rebuke Him, saying, “Far be it from You, Lord; this shall not happen to You!”
23 But He turned and said to Peter, “Get behind Me, Satan! You are an offense to Me, for you are not mindful of the things of God, but the things of men.”
If we can draw a parallel to Buddhism, it can be said that the concerns of Enlightenment, Nibbana, and living in a world that is suffering free cannot be achieved without turning to the inherent goodness within, our each and individual potential for Buddhahood and Tranquil Cessation from this temporary world. The Buddha taught us to only talk of things conductive to liberation. He also taught us that One with the Body of a Buddha is not an ordinary human being. Even in other Spiritual Traditions they teach of Spiritual Bodies, etc. So there is some transformational change between the unenlightened and the then Buddha.
From the Donasutta:
“When you are asked: ‘Could you be a deva, sir?’ you say: ‘I will not be a deva, brahmin.’ When you are asked: ‘Could you be a gandhabba, sir?’ you say: ‘I will not be a gandhabba, brahmin.’ When you are asked: ‘Could you be a yakkha, sir?’ you say: ‘I will not be a yakkha, brahmin.’ When you are asked: ‘Could you be a human being, sir?’ you say: ‘I will not be a human being, brahmin.’ What, then, could you be, sir?”
(1) “Brahmin, I have abandoned those taints because of which I might have become a deva; I have cut them off at the root, made them like palm stumps, obliterated them so that they are no longer subject to future arising. (2) I have abandoned those taints because of which I might have become a gandhabba … (3) … might have become a yakkha … (4) … might have become a human being; I have cut them off at the root, made them like palm stumps, obliterated them so that they are no longer subject to future arising. Just as a blue, red, or white lotus flower, though born in the water and grown up in the water, rises above the water and stands unsoiled by the water, even so, though born in the world and grown up in the world, I have overcome the world and dwell unsoiled by the world. Remember me, brahmin, as a Buddha.
There are different ways to interpret this. But I believe a Buddha is Spiritualized by their Enlightenment, I mean, think of the Dharmakaya! It’s everywhere, not a “human being.”