19 Yet in the church I would rather speak five words with my understanding, that I may instruct others, than ten thousand words in an unknown tongue.
1 Corinthians 14:19 Cross References - Anderson
1 Corinthians 14:4
4 He that speaks in an unknown tongue, edifies himself; but he that prophesies, edifies the church.
1 Corinthians 14:21-22
21 In the law it is written: Through men of other tongues and other lips will I speak to this people; and not even thus will they hear me, says the Lord.
22 Therefore, tongues are for a sign, not to those who believe, but to those who believe not: but prophecy is not for those who believe not, but for those who believe.