the foolish and weak...

1 Corinthians 1:26 Brothers and sisters, think of what you were when you were called. Not many of you were wise by human standards; not many were influential; not many were of noble birth. 27 But God chose the foolish things of the world to shame the wise; God chose the weak things of the world to shame the strong. 28 God chose the lowly things of this world and the despised things--and the things that are not--to nullify the things that are, 29 so that no one may boast before him. 30 It is because of him that you are in Christ Jesus, who has become for us wisdom from God--that is, our righteousness, holiness and redemption. 31 Therefore, as it is written: 'Let the one who boasts boast in the Lord.'

Paul shows that God was pleased to save those who believed the "weak and foolish" gospel of Christ crucified. In fact, God intentionally chose those who were weak and foolish in the world's eyes to believe the "weak and foolish" gospel of Jesus. In this way, God will shame the supposed wisdom and strength of all those high-status people who have rejected faith in Christ (1 Corinthians 1:26–31).