1 Corinthians 11:18

11:18 For in the first place, when you come together as a church I hear there are divisions among you, and in part I believe it.

1 Corinthians 14:2

14:2 For the one speaking in a tongue does not speak to people but to God, for no one understands; he is speaking mysteries by the Spirit. ¹ 

[14:2]  ¹ tn Or “with the spirit”; cf. vv. 14-16.