Isaiah 40:18

40:18 To whom can you compare God?

To what image can you liken him?

Deuteronomy 4:15-18

The Nature of Israel’s God

4:15 Be very careful, then, because you saw no form at the time the Lord spoke to you at Horeb from the middle of the fire. 4:16 I say this so you will not corrupt yourselves by making an image in the form of any kind of figure. This includes the likeness of a human male or female, 4:17 any kind of land animal, any bird that flies in the sky, 4:18 anything that crawls on the ground, or any fish in the deep waters of the earth.

Deuteronomy 4:33

4:33 Have a people ever heard the voice of God speaking from the middle of fire, as you yourselves have, and lived to tell about it?

Deuteronomy 5:8

5:8 You must not make for yourself an image of anything in heaven above, on earth below, or in the waters beneath.