In Genesis, God walks on the garden of Eden. Israelites saw a sapphire throne below God's feet. Ezekiel saw a throne and someone sitting on it. So is John in revelation. In Mamre, Abraham saw 3 guys, and Christians believe one of them is God. Does God have a form as seen by John the Apostle?
I saw some atheist sites, that interpret the Bible based on what it actually says, even think that Abraham must have seen 3 gods, El Shaddai, Yahweh, and maybe Elyon, coming to Abraham.
In any case, several times in the bible, God is described as having form. People just can't see it because they die if they do.
Yet many believe that God has no form. What verses in the Bible are used to say, "God has no form"?