10. There are, it may be, so many kinds of voices in the world, and none of them is without signification.
11. Therefore, if I know not the meaning of the voice, I shall be to him that speaketh a barbarian, and he that speaketh will be a barbarian to me.
12. Even so ye, forasmuch as ye are zealous of spiritual gifts, seek that ye may excel to the edifying of the church.
13. Wherefore, let him that speaketh in an unknown language, pray that he may interpret.
14. For if I pray in an unknown language, my spirit prayeth, but my understanding is unfruitful.
15. 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.