1 Corinthians 3:18
Do not deceive yourselves. If any of you think you are wise by the standards of this age, you should become fools so that you may become wise — Paul's exhortation is paradoxical: to become truly wise, one must 'become fools' (ginomai mōros) by worldly measures. The Corinthians' boasting in sophistic wisdom is self-deception (exapatāō). True wisdom requires renouncing false wisdom first.