1 Corinthians 14:2-4

YLT(i) 2 for he who is speaking in an unknown tongue—to men he doth not speak, but to God, for no one doth hearken, and in spirit he doth speak secrets; 3 and he who is prophesying to men doth speak edification, and exhortation, and comfort; 4 he who is speaking in an unknown tongue, himself doth edify, and he who is prophesying, an assembly doth edify;