1 Corinthians 14
12 Ref So also you, since you are zealous for spiritual gifts, seek that you may abound to the building up of the assembly.
13 Ref Therefore let him who speaks in another language pray that he may interpret.
14 Ref For if I pray in another language, my spirit prays, but my understanding is unfruitful.
15 Ref What is it then? I will pray with the spirit, and I will pray with the understanding also. I will sing with the spirit, and I will sing with the understanding also.
16 Ref Otherwise if you bless with the spirit, how will he who fills the place of the unlearned say the "Amen" at your giving of thanks, seeing he doesn't know what you say?
17 Ref For you most assuredly give thanks well, but the other person is not built up.