Yogis, gurus and gnostics all claim to have seen god in a vision. Paul saw god as light, Moses saw god as a man. Most of the gnostics claim to have visited a heaven. Did they prove it?
In the bible it states god is not material. Does it not say god is unknowable!.
In the gospel of Judas , Jesus says when you drop the case of flesh, you will be the who is (not you).
Jesus appears to be one who truely grasps the nature of oneness. All the others are clouded by the waking and dreaming awareness.