Acts 2:3

Verse 3. Tongues … of fire. The Hebrews use the name tongue, for almost any thing pointed. Thus they say, a tongue of the earth, for a promontory. Josue 15:5. A fiery tongue for a flame in shape of a tongue. Isa. 5:24. The expression, therefore, in this place, may mean noting more than sparks, or rather flames, which appeared above all who were in the house.—Sed et Latinis quod extremum et acutum est lingua dicitur, quare scopulos summos & invios linguas dixit Cæsar. P.—By the fiery tongues is signified the efficacy of the apostles’ preaching, and the gift of tongues bestowed upon them. Menochius.