²⁰ For from the first making of the world, those things of God which the eye is unable to see, that is, his eternal power and existence, are fully made clear, he having given the knowledge of them through the things which he has made, so that men have no reason for wrongdoing:

¹⁵ So keep watch on yourselves with care; for you saw no form of any sort on the day when the voice of the Lord came to you in Horeb out of the heart of the fire: