Paul wrote this letter in 55 or 56 AD while he was at Ephesus during his 3rd missionary journey. Paul is dealing with problems concerning the young congregation as a whole and also with personal problems.
The first issue makes it clear that Jesus is the head of the church. I belong to him. I follow him. He was crucified for me. I was baptized into his name. I should not turn another into a kind of living idol.
I did not know God. I could not have known God unless he reveals himself to me. (21) Even if I were to study and learn from the wisest and most published person, I would not know God. The world through its wisdom cannot know God.
I am saved through the cross of Christ. The cross of Jesus is foolishness to mankind. The cross of Jesus is a weakness to mankind. Mankind is wrong in both. The cross of Christ is God’s strength and God’s wisdom.
Christ crucified is the power of God and the wisdom of God.
Some have said I know a lot and am well studied. The more I study the more I see that I know little nor have much wisdom unless God reveals it to me. That what I don’t know or understand I study a lot to learn a little more in hopes to understand that which I don’t understand. Once I learn something it brings more questions and things that I do not understand. So more study, prayer, and thought is needed. Yes, I accept all I know has been revealed to me by God through his Spirit.
I am not strong physically even though I jog and go to the gym. I am not strong mentally nor emotionally though it may appear to be so from the outside. When trouble and problems come I try to face them with faith. Yet I worry and am concerned.
So, for wisdom and strength, I go to God. I am weak. He is strong. I am not wise. He is all wisdom.

