Wisdom from God
Paul tells them to consider their own calling: not many of them were wise, powerful, or noble by human standards. Instead, God chose what is foolish, weak, low, and despised in the world in order to shame what seems strong and important, so that no one may boast before him.
B26rothers, consider the time of your calling: Not many of you were wise by human standards; not many were powerful; not many were of noble birth. 27But God chose the foolish things of the world to shame the wise; God chose the weak things of the world to shame the strong. 28He chose the lowly and despised things of the world, and the things that are not, to nullify the things that are, 29so that no one may boast in His presence.
It is from God that they are in Christ Jesus, and in him they have received God's wisdom in the form of righteousness, holiness, and redemption. Therefore the only fitting boast is the one Scripture allows: boasting in the Lord.
30It is because of Him that you are in Christ Jesus, who has become for us wisdom from God: our righteousness, holiness, and redemption. 31Therefore, as it is written: “Let him who boasts boast in the Lord.”