Revelation 11:7

7AndΚαὶwhenὅτανthey shall have completedτελέσωσινtheτὴνtestimonyμαρτυρίανof themαὐτῶν,theτὸbeastθηρίοντὸcoming upἀναβαῖνονout ofἐκtheτῆςabyssἀβύσσουwill makeποιήσειwithμετ’themαὐτῶνwarπόλεμονandκαὶwill overcomeνικήσειthemαὐτοὺςandκαὶwill killἀποκτενεῖthemαὐτούς.

And when they shall have completed their testimony, the beast coming up out of the Abyss will make war with them and will overcome them and will kill them.