Thanks aqwsed12345 for the interesting conversation. We’ve not discussed doctrines like this for a while. At least I haven’t.
I don’t read Latin but AI translated it for me and it seems that Jerome was arguing that qana doesn’t mean “created”. That makes sense that, since he didn’t translate qana as created in Prov 8.22, he would argue that was the correct decision. I’m not sure it tells us anything new. It’s also worth noting that Jerome did translate qana as “created” in Gen 14.19. There is obviously more to consider than just what Jerome translated, and why, such as the LXX, the Syriac version, the Targums, modern scholarly versions such as NRSV, Robert Alter, and the rest who support the translation “created” in this verse.
Lots of people in the early church called themselves Trinitarian but do not meet the common modern definition of the word. Arius himself described himself as Trinitarian. So from that perspective maybe Lactantius is a Trinitarian. But where he appears to agree with JWs is that Jesus is an angelic creature and that only God the Father is without a beginning. If you say a Trinitarian can believe that Jesus was created before the world was created and still be a good Trinitarian, then I struggle to see what your problem with JWs is because that’s what JWs believe Too.
But lest by any chance there should be any doubt in your mind why we call Him Jesus Christ, who was born of God before the world, and who was born of man three hundred years ago, I will briefly explain to you the reason. The same person is the son of God and of man. For He was twice born: first of God, in the spirit, before the origin of the world; afterwards in the flesh of man, in the reign of Augustus; and in connection with this fact is an illustrious and great mystery, in which is contained both the salvation of men and the religion of the Supreme God, and all truth. Lactantius, Epitome of the divine institutes, 43
https://www.newadvent.org/fathers/0702.htm