For their power is in their mouth, and in their tails: for their tails [were] like unto serpents, and had heads, and with them they do hurt.
Berean Study Bible (BSB) - Revelation 9:19 >For the power of the horses was in their mouths and in their tails; indeed, their tails were like snakes, having heads with which to inflict harm.
Textus Receptus (TR) - Revelation 9:19 >Αἱ γὰρ ἐξουσίαι αὐτῶν ἐν τῷ στόματι αὐτῶν εἰσιν· αἱ γὰρ οὐραὶ αὐτῶν ὅμοιαι ὄφεσιν, ἔχουσαι κεφαλάς, καὶ ἐν αὐταῖς ἀδικοῦσι.