TONGUES OF FIRE
Phrase occurring only in Acts 2:3, describing the visible manifestation of the Spirit. The tongues of fire seem to be the fulfillment of John the Baptist’s proclamation that the Coming One would baptize with the Holy Spirit and fire (Mt 3:11; Lk 3:16). The disciples are described as filled with the Holy Spirit, thus fulfilling the OT promise reiterated by John the Baptist and Jesus of the baptism of the Spirit.
See also Pentecost.