What that scripture is saying is that those without Faith consider what Paul is preaching is foolish, but God took what the unfaithful considered foolishness to save those who would believe, who would exercise faith in what they heard. That doesn't mean God or Paul considers it foolishness.
1 Corinthians 1:18 KJV
For the preaching of the cross is to them that perish foolishness; but unto us which are saved it is the power of God.
I like this verse in light of what you said. Yes, they consider it foolish, but God says the preaching of the word is power, and his power, no less.
1 Corinthians 1:21 KJV
For after that in the wisdom of God the world by wisdom knew not God, it pleased God by the foolishness of preaching to save them that believe.
This is the verse I quoted. Combining it with the previous verse, I see your point.
1 Corinthians 1:22-23 KJV
For the Jews require a sign, and the Greeks seek after wisdom: [23] But we preach Christ crucified, unto the Jews a stumblingblock,
The Jews required a sign, funny thing is they got many. The Greeks (I suppose this means the philophers of the world) looked for wisdom, and I believe the OT had that and the prophesies did as well. But neither group accepted the signs or philosophy given*
*Keep in mind the education Paul had. He was a student of both the Torah and Greek Philophy. He even borrowed from both in his writings. He counted it t as dung, which confused me a little since he used it so much. I understand that it was but dung compared to the revelation he received, but... He still borrowed from both the Torah and classic Greek Philophy.
1 Corinthians 1:25 KJV
Because the foolishness of God is wiser than men; and the weakness of God is stronger than men.
Here we have two contrasts:. 1. The foolishness of God vs. the wisdom of men; 2. The weakness of God vs. the strength of men.
If God has no weakness or no foolishness, there can be no contrast, yet Paul makes a contrast. He is comparing the lesser things of God with the greater things of men.
Does mankind have strength and wisdom? On a natural level, yes. On a spiritual level, it cannot even be compared. That is, our natural strength and knowledge to that of God.
1 Corinthians 1:27 KJV
But God hath chosen the foolish things of the world to confound the wise; and God hath chosen the weak things of the world to confound the things which are mighty;
This is a verse we can both point to for support. "Foolish" things and "weak" things are of this world. But God chose THEM.
So the foolishness of God is preaching. The weakness of God is the Church (I haven't proved that, but I can provide scripture to prove that). It's of man, but he did chose it.
In conclusion: no, I don't believe it is a weakness. I am the one defending what is called "weakness". You are saying God has no weakness... I agree, but the preaching is what is called weakness and it's the power of God.
It's greater than just reading the Bible on your own.
So, with a God who is perfect and has declared the end from the beginning, no there is no weakness. I agree with you. But he did power down... He chose preaching to save them that believe