11. If then I do not know the power of the voice, I shall be a foreigner to him who speaks, and he who speaks be a foreigner to me.
12. So also you, since you are ardent for spiritual gifts, seek to excel in the upbuilding of the assembly.
13. Therefore, he who is speaking in a tongue, let him pray that he might interpret.
14. For if I am praying in a tongue, my spirit is praying, but my understanding is without fruit.