1 Corinthians 14:12KJV

10There are, it may be, so many kinds of voices in the world, and none of them without signification.

11Therefore if I know not the meaning of the voice, I shall be unto him that speaketh a barbarian, and he that speaketh a barbarian unto me.

12Even so ye, forasmuch as ye are zealous of spiritual , seek that ye may excel to the edifying of the church.

13Wherefore let him that speaketh in an tongue pray that he may interpret.

14For if I pray in an tongue, my spirit prayeth, but my understanding is unfruitful.