Originally posted by @philokalia
I would say that it is not too conclusive.
In other words in just the portion of the article you quoted, I see not too much to make an issue about.
Whether or not Satan is technically an angel is beside the point. Satan is an angelic-type creature with a close connection to the angels.
What's really important?
That an very ancient being was described as
"perfect in [his] ways" from the time of his creation, and subsequently became evil, that is significant.
"You were perfect in your ways from the day that you were created, until unrighteousness was found in you." (Ezek. 28:15)
That would not be appropriate of any human being existing since the sin of Adam. Possibly excluding the man Jesus the Son of God to whom the passage couldn't refer.
"But he's not
called an angel!" is not something I feel needs to be fought over. Do you?
A class of very ancient beings were involved in the government of the creation. And one of them went from perfection to the arch-enemy of God and man.
In this verse John sees twenty four
"elders" around the throne of God praising God for His creation. They have crowns. I follow the interpretation that they are not "elders" of Israel. Nor are they "elders" of the Christian church. But they are "elders" of the creation, being the oldest being created by God, with thrones and crowns of divinely ordained authority.
"Immediately I was in spirit, and behold, there was a throne set in heaven, and upon the throne there was One sitting. And He who was sitting was like a jasper stone and a sardius in appearance, and there was a rainbow around the throne like an emerald in appearance.
And around the throne there were twenty-four thrones, and upon the thrones twenty-four elders sitting, clothed in white garments, and upon their heads golden crowns." (Rev. 4:3,4)
The symbol points to the most ancient creations of God, the
"elders" of the universe endowed with deputy authority. Among this class of beings Satan came.
They should not mean elders of the Christian church because John himself is not among them. And surely John was one of the original disciples of Christ.
The point here is not that Satan was one of the twenty four. But the vision conveys that the most elderly beings in God's creation had thrones and kingly authority. They are seen here praising God mainly for His creation and His eternal purpose.
"The twenty-four elders will fall before Him who sits upon the throne and worship Him who lives forever and ever, and they will cast their crowns before the throne, saying,
You are worthy, out Lord and God, to receive the glory and the honor and the power, for You have created all things, and because of Your will they were, and were created." (vs. 10,11)
From this oldest created authorities pre-dating human beings, Satan arose. Calling him an ancient arch-angel seems legitimate to me.