1 Corinthians 14:4 in the King James Version
He that speaketh in an unknown tongue edifieth himself; but he that prophesieth edifieth the church.
Context
3 But he who prophesies speaks to men for their edification, exhortation, and consolation.
4 He who speaks in another language edifies himself, but he who prophesies edifies the assembly.
5 Now I desire to have you all speak with other languages, but even more that you would prophesy. For he is greater who prophesies than he who speaks with other languages, unless he interprets, that the assembly may be built up.