1 Corinthians 14:2-4

Living_Oracles(i) 2 For he who speaks in a foreign language, speaks not to men, but to God; for no one understands him: nevertheless, by the Spirit he speaks secrets. 3 But he who prophesies, speaks to men for edification, and exhortation, and consolation. 4 He who speaks in a foreign language, edifies himself: but he who prophesies, edifies the congregation.