He did not speak so that the attraction was in human wisdom. Now here is a problem.
Even a sincere Christian preacher can get into trying to attract human wisdom, almost by accident. Suppose that in trying to win sinners to Christ, I was to spend an entire message speaking about the joys and the benefits, and the good things in the Christian life, and the happiness and companionship in the family of God and among Christian people, and all the benefits, and suppose I was to try to draw people to Christ on that basis. Certainly, it is quite legitimate to mention the benefits, but it has got to be in balance with the need for repentance and faith in Christ, coming to him as a humbled sinner, and depending upon him for salvation and redemption. It cannot be just: ‘Put your hand in his, and your life will be happy ever after.’ If that is my message, then even as a sincere preacher I have fallen into the trap of enticing words of man's wisdom. I am enticing and attracting in human terms for human happiness, appealing to the desires of the flesh alone. The apostle does not do that; his preaching is balanced. When he mentions the glories, he also mentions the need for humiliation before God and true repentance; sincere repentance, and dependence upon Christ, and crying out for the transformation which is conversion to God.