1 Corinthians 3:18

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.

1 Corinthians 7:5

7:5 Do not deprive each other, except by mutual agreement for a specified time, so that you may devote yourselves to prayer. ²  Then resume your relationship, ³  so that Satan may not tempt you because of your lack of self-control.

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¹ tn Grk “let no one deceive himself.”

² tc Most later witnesses (א² Ï sy) add “fasting and” (τῇ νηστείᾳ καί, th nhsteia kai) before “prayer.” But such an addition is motivated by ascetic concerns; further, its lack in Ì^11vid,46 א* A B C D F G P Ψ 33 1739 1881 2464 al latt co argues decisively against its authenticity.

³ tn Grk “and be together again.”