1 Corinthians 14:2-4

RKJNT(i) 2 For he who speaks in an unknown tongue does not speak to men, but to God: for no man understands him; yet in the spirit he speaks mysteries. 3 But he who prophesies speaks to men for their edification, and exhortation, and comfort. 4 He who speaks in an unknown tongue edifies himself; but he who prophesies edifies the church.