Tongues, Gift of. Joel 2:28; Acts 2:16; Mark 16:17; comp. Matthew 10:19-20; Mark 13:11. This gift was of two kinds. The first gift was the power to "declare the wonderful works of God" in languages ordinarily unknown to the speakers, for the instruction of foreign hearers. Acts 2:4-11. The other form of the gift of tongues is thought to have been an ecstatic form of worship, chiefly praise, but requiring interpretation. Acts 10:46; 1 Corinthians 12:30.