1 Corinthians 14:9-11

Rotherham(i) 9 So, also, ye, through means of the tongue, except ye give intelligible discourse, how shall it be known what is being spoken? for ye will be speaking, to the air. 10 There may happen to be so many kinds of languages in the world, and, not one, unspoken:–– 11 If, then, I do not know the meaning of the language, I shall be, unto him that is speaking, a foreigner, and, he that is speaking, shall be, in my case, a foreigner.