Speaking in an unknown language
1 Corinthians 12:10 (ASV 1901)
10and to another workings of miracles; and to another prophecy; and to another discernings of spirits: to another divers kinds of tongues; and to another the interpretation of tongues:
1 Corinthians 14:2–4 (ASV 1901)
2For he that speaketh in a tongue speaketh not unto men, but unto God; for no man understandeth; but in the spirit he speaketh mysteries. 3But he that prophesieth speaketh unto men edification, and exhortation, and consolation. 4He that speaketh in a tongue edifieth himself; but he that prophesieth edifieth the church.