1 Corinthians 14:27

14:27 If someone speaks in a tongue, it should be two, or at the most three, one after the other, and someone must interpret.

1 Corinthians 6:5

6:5 I say this to your shame! Is there no one among you wise enough to settle disputes between fellow Christians? ¹ 

[6:5]  ¹ tn Grk “to decide between his brother (and his opponent),” but see the note on the word “Christian” in 5:11.