1 Corinthians 3:20; 1 Corinthians 7:5; 1 Corinthians 12:21

20 and again, "THE LORD KNOWS THE REASONINGS of the wise, THAT THEY ARE USELESS."
5 Stop depriving one another, except by agreement for a time, so that you may devote yourselves to prayer, and come together again so that Satan will not tempt you because of your lack of self-control.
21 And the eye cannot say to the hand, "I have no need of you"; or again the head to the feet, "I have no need of you."