ἅρμα

Was returning, and sitting in his chariot read Esaias the prophet.

Then the Spirit said unto Philip, Go near, and join thyself to this chariot.

And he commanded the chariot to stand still: and they went down both into the water, both Philip and the eunuch; and he baptized him.

And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle.