And there appeared unto them separated tongues like as of fire, and it sat upon each of them.
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Cyril of Jerusalem
AD 386
And there appeared to them separate tongues:
Thus they were entirely baptized according to the promise, and invested soul and body with a divine garment of salvation. They partook of fire, not of burning but of saving fire; of fire which consumes the thorns of sins, but gives lustre to the soul.