1 Corinthians 3:18-20

3:18 Guard against self-deception, each of you. ¹  If someone among you thinks he is wise in this age, let him become foolish so that he can become wise. 3:19 For the wisdom of this age is foolishness with God. As it is written, “He catches the wise in their craftiness.” ²  3:20 And again, “The Lord knows that the thoughts of the wise are futile.” ³ 

[3:18]  ¹ tn Grk “let no one deceive himself.”

[3:19]  ² sn A quotation from Job 5:13.

[3:20]  ³ sn A quotation from Ps 94:11.