9So also ye, unless ye utter by the tongue speech easy to understood, how shall it be known what is spoken? for ye will be speaking into the air.
10There are, it may be, so many kinds of voices in the world, and no [kind] is without signification.
11If then 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 unto me.
12So also ye, since ye are zealous of spiritual [gifts], seek that ye may abound unto the edifying of the church.
13Wherefore let him that speaketh in a tongue pray that he may interpret.
14For if I pray in a tongue, my spirit prayeth, but my understanding is unfruitful.
15What 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.
