1 Corinthians 14:15–17

15 What then? I will pray with the spirit, and I will also pray with my understanding. I will sing praise with the spirit, and I will also sing praise with my understanding. 16 Otherwise, if you praise with the spirit,A how will the outsiderB say “Amen”i at your giving of thanks, since he does not know what you are saying? 17 For you may very well be giving thanks, but the other person is not being built up.