1 Corinthians 14:16-18

New Revised Standard Version, Anglicised

¹⁶ Otherwise, if you say a blessing with the spirit, how can anyone in the position of an outsider say the ‘Amen’ to your thanksgiving, since the outsider does not know what you are saying? ¹⁷ For you may give thanks well enough, but the other person is not built up. ¹⁸ I thank God that I speak in tongues more than all of you;