AUV(i)
20 Brothers, do not be children in the way you think, but be babies in wrongdoing; yet be mature in your thinking.
21 It is written in the law [Isa. 28:11f], “I [i.e., God] will speak to these people [i.e., the Israelites] by men with foreign languages and through the lips of strangers, and even then they will not listen to me, says the Lord.”
22 Therefore, languages [i.e., spoken supernaturally] are for a [miraculous] sign to unbelievers, not to believers. But prophesying is for a [miraculous] sign to believers, not to unbelievers.
23 Therefore, if the whole church assembles together and everyone speaks in languages [i.e., supernaturally], and outsiders [i.e., people who do not understand the language being spoken] or unbelievers come [into the assembly], will they not say that you people are crazy?
24 But if everyone prophesies and someone comes [into the assembly] who is an outsider or an unbeliever, he will be convicted [of his sins] by everyone [i.e., who speaks the message in an intelligible language], and judged by everyone.
25 The secrets of his heart will be revealed so that he will fall [to the ground] on his face and worship God, declaring that God is truly among you.