1 Corinthians 14:4

“He that speaketh in a tongue edifieth himself; but he that prophesieth, edifieth the Church.”

From his intimate communion with God, the glossolalete derives a blessing which, even though it is not transformed into precise notions by the exercise of the understanding, makes itself felt as a power in the depths of his soul; but the Church has received nothing of the kind, for it has understood nothing of the inward dialogue kept up with God. Prophecy, on the contrary, is like a torrent of living water which overspreads and quickens the whole Church. Hence the conclusion drawn, 1 Corinthians 14:5.