Ezekiel 28:19

Those who knew him would feel appalled at his end. He would be a source of terror to observers, a horrible warning of the consequences of pride, and he would be no more.

"What Adam and Eve were tempted to try to get was equality with God (Genesis 3:4 [sic 5]). That is exactly what Tyre’s king wanted, too. Whatever he personally may have thought of himself, the passage makes it clear that his actions were those of a person seeking such wealth and power as to be his own god." [Note: Stuart, p. 274.]

Conservative interpreters of this passage divide into three basic groups. Some believe that only the human king of Tyre is in view throughout the passage. [Note: E.g., Alexander, "Ezekiel," pp. 882-85; Taylor, pp. 196-97; Keil, 1:409-25; Ellison, pp. 108-9; Allen, Ezekiel 20-48, p. 95; Block, The Book . . . 48, pp. 118-19; The Nelson Study Bible, notes on Ezekiel 28:12-19; Stuart, pp. 273-74; and myself.] Others believe only Satan is in view. [Note: E.g., Chafer, 2:39-44; Merrill F. Unger, Biblical Demonology: A Study of the Spiritual Forces Behind the Present World Unrest, p. 15; and J. Dwight Pentecost, Your Adversary the Devil, pp. 11-19.] The third view is that both the human king and Satan are in view. Some who hold this opinion believe that the king is the primary referent and that Satan is seen as the power behind his throne. [Note: E.g., Cooper, pp. 265-68; and Feinberg, pp. 159-64.] Others hold that the primary referent is Satan and that the king comes into view only secondarily. [Note: E.g., Dyer, "Ezekiel," pp. 1283-84; idem, in The Old . . ., p. 685.]

As far as I have been able to determine, the view that this passage reveals something about Satan before the Fall (Genesis 3) originated with the church fathers, including Origin, in the third and fourth centuries A.D. They applied the teaching of the passage to Satan and even interpreted it as specifically teaching things about Satan.