I Corinthians 3:1, 18, 21
I Corinthians 3:1 NKJV
And I, brethren, could not speak to you as to spiritual people but as to carnal, as to babes in Christ.
I Corinthians 3:18 NKJV
Let no one deceive himself. If anyone among you seems to be wise in this age, let him become a fool that he may become wise.