Is Jesus the “Visible God” in the Old Testament? (Colossians 1:15)

What does the Apostle Paul intend to communicate when he tells us that Jesus is the image of the invisible God? Do we see Jesus make appearances as the visible Yahweh in the Old Testament? What is the "Two Powers of Heaven" theology and what does it have to do with this passage?

Would you be interested in giving to support The Universe Next Door?
https://apologetics.org/donate/

No, I didn't make this stuff up. Check out Michael Heiser's book Unseen Realm:
https://www.amazon.com/Unseen-Realm-Recovering-Supernatural-Worldview/dp/B099NSCP9J/ref=sr_1_4?crid=GLXMQ23O1QLD&keywords=unseen+realm&qid=1672330563&sprefix=unseen+realm%2Caps%2C191&sr=8-4