1 Cor 14:10-13

10 There are, it may be, so many kinds of voices in the world, and no (kind) is without signification.

11 If 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.

12 So also ye, since ye are zealous of spiritual (gifts), seek that ye may abound unto the edifying of the church.

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