1 Corinthians 14:1, 4, 22
1 Corinthians 14:1 KJV
Follow after charity, and desire spiritual gifts, but rather that ye may prophesy.
1 Corinthians 14:4 KJV
He that speaketh in an unknown tongue edifieth himself; but he that prophesieth edifieth the church.
1 Corinthians 14:22 KJV
Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for them which believe.