I gave you the link to Aquinas’ Summa article. That should do it.
I’m not going to comb through his voluminous writings line by line,
while somebody nips at my heels all along the way.
Really, you see me as “nipping at your heels?”
That’s an insult. You think I’m an annoying dog or something?
Is it because I had to ask you twice for an answer?
And now you refer me to Saint Thomas. That is fine, I love Saint Thomas. Nonetheless, if I do not find the demonstration that Wisdom cannot be created in eternity in Saint Thomas, it would appear that Scripture can remain intact after all, and created Wisdom is from eternity, as Scripture says, despite Saint Thomas’s doubts while he was still in Church Militant. Most Christians do in fact hold Scripture as a higher authority than any Saint. But let us see what Saint Thomas actually said.
newadvent.org/summa/1046.htm#article1
"I answer that, Nothing except God can be eternal. And this statement is far from impossible to uphold: for it has been shown above (Question 19, Article 4) that the will of God is the cause of things. Therefore things are necessary, according as it is necessary for God to will them, since the necessity of the effect depends on the necessity of the cause (Metaph. v, text 6). Now it was shown above (Question 19, Article 3), that, absolutely speaking, it is not necessary that God should will anything except Himself. It is not therefore necessary for God to will that the world should always exist; but the world exists forasmuch as God wills it to exist, since the being of the world depends on the will of God, as on its cause. It is not therefore necessary for the world to be always; and hence it cannot be proved by demonstration. "
He refers us to elsewhere in the Summa.
newadvent.org/summa/1019.htm#article4
newadvent.org/summa/1019.htm#article3
But these are merely for reference. He makes the case for what he is actually saying in Q. 46, Art. 1, quoted above. He says, first, that the will of God is the cause of all things. I say that God willed Wisdom into existence in eternity, so I do not contradict Saint Thomas there. Then He says that it is not absolutely necessary that God should will anything except Himself. It it not necessary that God should have created a world at all. I do not contradict Saint Thomas here either, since created Wisdom is not a necessary creature. God could have remained by Himself, the Holy Trinity, for all eternity, and never created anything.
What Saint Thomas is saying is that it is impossible to prove the world is eternal because the world is not necessary, and that which is not necessary can at some time not exist. I am not contradicting any of that. But none of that leads to the conclusion that “Nothing except God can be eternal.” If nothing except God can be eternal, then it is impossible for God to create Wisdom in eternity before He created His Creation. Yet, Holy Scripture plainly states that Wisdom was created first, before all things else. Proverbs 8:22-31, Sirach 1:1-8.
If Wisdom was created in eternity, then Wisdom is eternal with God, and it is not God alone who is eternal; Wisdom, also is.