1 Corinthians 14:2

14:2 For he who speaks in another language speaks not to men, but to God; for no one understands; but in the Spirit he speaks mysteries.
-World English Bible

Other Translation

14:2 For he that speaketh in an [unknown] tongue speaketh not unto men, but unto God: for no man understandeth [him]; howbeit in the spirit he speaketh mysteries.
-King James Version