"The highlighted words are from Greek philosophy."
It's not an argument, it's just a bluff that you can't give a meaningful answer.
There are many terms known and used in Greek philosophy used in the NT terminology, such as: pleroma, logos, arkhe, hypostasis, physis, etc. So the apostles were not at all averse to the use of terms and concepts that had their own precedents and parallels in Greek philosophy as well, so it's completely justified.
We know that Paul willingly boarded a ship dedicated to Castor and Pollux, or that a Christian person in the Bible bore the names Fortunatus or Mercurius. But there is even more elaborate: Paul takes his analogy from the Mithraic cult when talking about shedding the old man and putting on the new man. Paul approvingly quotes a verse ("in Him we live and move and exist") that originally addressed Zeus. He even calls a Cretan poet, Epimenides, a prophet.
We know that these names and motifs come from paganism, and if you were right, Christians should have thrown them away like hot iron. Apostles used the pagans' education in this sense, at least, and sometimes lived with their customs and phrases. Thus, they did not hesitate to call Jesus "Savior", although Roman emperors and earlier pagan rulers used it as a decorative title. Similarly, the Kyrios, which was applied to Jesus in the first, most concise Christian creeds, was the emperor's title of honor. But Paul spoke of the victor's wreath, which was part of the pagan religious elements woven into the Olympic Games, or the winner's palm, which also symbolized eternity with pagan overtones.
"By contrast, in biblical language Jesus is, “the firstborn of all creation” (Col 1.15), “the beginning of the creation of God” (Rev 3.14)"
Neither text proves what you reads into it. This interpretation is, to put it mildly, improbable, and the other statements of Scripture that the Son was "begotten" and already "was" in the beginning, even though excludes this interpretation, not to mention the countless statements that cannot be applied to creatures. The term firstborn in biblical context doesn't mean "first in order", but pre-eminent heir. In the contemporary context, prōtotokos here is a title, a dignified name, roughly meaning "distinguished, pre-eminent heir". Just as WTS literure can understand it well in other context:
„David, who was the youngest son of Jesses, was called by Jehovah the "first-born," due to Jehovah’s elevation of David to the preeminent position in God's chosen nation.”
(Aid to Bible Understanding, 1971, 584)
So if the title "firstborn" actually means "preeminent position", why would "preeminent of all creation" mean the "first creature"?
The fact that "the arche of God's creation" in the given Hellenic cultural-linguistic environment did not mean at all that he was the "first created being", but rather the primordial, elementary principle, active cause, orign, etc. of creation. This was the meaning of the word "arkhe" in the original language, which the English word "beginning" cannot accurately reflect. You can check how many times and senses does the NT uses this word int the Concordance.
“I live because of the Father” (John 6.57)"
That also doesn't refute the Nicene theology, which also holds this: the Son is generated from the Father, but not made, not by creation, but - as the Scripture says - begotten, born, and "before" the creation of the aions.
"“the Lord created me” (Prov 8.22 in the Jewish Publication Society translation, Robert Alter’s translation, the NRSV, and the LXX as quoted and accepted by all the early Christian fathers, including Athanasius)."
Whoever translates it so, whoever "accepts" this, it's still a mistranslation. It's qanah in the Hebrew text, not bara. And only the original language text is inspired, a translation is not. Athanasius did not "accept" this, just didn't addressed the issue, since he wasn't a Hebraist, nor a Bible translator. And still could refute Arianism.
"You have not given any good reason why these scriptures don’t simply mean what they say"
I have: these text doesn't mean what they "mean" in your mind. I've proven that firstborn doesn't mean first created, from WTS publications I could prove this is a title means "pre-eminent", and arkhe also doesn't mean "first in order or time", and "beginner", but the originating, promordial principle. He doesn't have beginning, he is THE beginning, the arkhe himself.
"any reason why Origen did not mean what he said when he called Jesus the “most ancient of all the works of creation”."
I have: you can look up yourself that Origen was clearly Trinitarian, although sometimes with imprecise wording, but professed that the Son is truly God, and begotten of the same substance of the Father. So you are doing a fallcy quoting out of context. Your translation is also misleading, since he doesn't said He was the first created being, but practically that he is older than demiurges. Origen's words do not at all testify to an Arian consensus in Christology before the 4th century. You also received links where this is presented in detail, but then again for your pleasure:
- https://www.answering-islam.org/Shamoun/origens_christology.htm
- https://e-homoreligiosus.blogspot.com/2021/05/roman-monteros-collection-of-quotations.html
"John Ziesler said that Jesus is distinct from God and subordinate to him."
Who cares what John Ziesler said or thought? What authority does he have? Nicene theology also accepts that Jesus is distinct from God the Father, and again: Self-subordination doesn't imply inferiorness in substance, that's why it's also necessary to distinguish if we are talking about the ontological, or about economical relationship of the Father and the Son. And after Incarnation the Son is also fully human, and as human of course inferior to God.
"How much clearer could he have been? How can you say that I am not quoting him fairly?"
Because you're doing a WTS-style 'quote collection", "quote mining", without any actual research, and you're throwing quotes at me as authorities. I asked you many times to stop it, since it completely against the scientific methodology and annoying as well.
Raymond Franz describes well that the job of many in Bethel is to visit libraries and look for half-sentences that can be taken out of lexicons. I don't care how many quotes you put in front of me to see, "even" Dr. John Smith and Dr. Franz Williams said. This is a misleading WTS propaganda tactic to frame their interpretation as "scientific consensus". There is a good chance that they did not think in the first place what the WTS wants to put into their mouths, that the early Christians professed a WTS Christology. If you asked them that question, you would get some interesting answers. They write cautious opinions, conclusions, and hypotheses without concrete evidence. The point is
Nowhere does the Bible call the Son a created being (ktistheis), a creature (ktisma) or the first creature (protoktisma or protoktisis). You more specifically, your secondary sources could not name a single early Christian source that specifically and explicitly states that the Son is "the first created being" and that "the Son is the Archangel".
We can see the opposite countless times in early Christian literature, from which it follows that they professed essentially the same content of faith as what was recorded in the Nicene Creed, so there was no alleged "great apostasy", which Jesus' words in Matthew 16:18 exclude anyway. There was no doctrinal break in the true church, false teaching did not take over. See also Mt 23:2-3, Mt 28:20, Rom 3:3-4, 1 Tim 3:15, 2 Tim 2:13.
"It is true that Jehovah’s Witnesses have described Jesus as an angel, but a fair representation of their teaching would acknowledge that they far more often they emphasise that Jesus is unique and superior to the angels because he is the “only begotten Son”."
Yep, but Hebrews 1 clearly proves that the Son is superior to "all the angels", so he cannot be one of them in any sense at all. An archangel is still just an angel, as the archbishop is also a bishop. Maybe the NWT forgot to add the word "other" here. If he cannot be an angel, since he is superior to "all of them", then what is Him? The Scriptures answers clearly: He is Lord, and truly God, not in a sense He is the same (in person) as the God the Father, but in the sense He is the eikon and kharakter of the Father's hypostasis. has the fullness (pleroma) of divinity (theotes, and not theiotes). That's the very same thing, what the Nicene creed contains, when it's says He is homoousios with the Father.