For those who don't know Heiser, I strongly recommend his book, The Unseen Realm: Recovering the Supernatural Worldview of the Bible.
I've read it several times. Quite eye opening. Great scholarship on the part of Heiser.
I ran across a Greek myth that said the world was governed by 70 sons of God, which tied in neatly with his exposition of Deut. 32:8, so I sent him an email, which he never replied to (he said he would on occasion). Never heard from him and wondered why. I found out later, his medical condition had started and I don’t think he was interested in such details.
bkmk
Michael Heiser was extremely good, but he was not the only one to talk about these issues. Others, are Tim Alberino, Trey Smith, Chuck Missler, Gary Stearman, L A Marzuli, Tom Horn, Mondo Gonzalez, and others.