Matthew 18:9

9Andκαὶifεἰtheὁeyeὀφθαλμόςof youσουcauses to sinσκανδαλίζειyouσε,gouge outἔξελεitαὐτὸνandκαὶcast [it]βάλεfromἀπὸyouσοῦ·betterκαλόνfor youσοίit isἐστινone-eyedμονόφθαλμονintoεἰςτὴνlifeζωὴνto enterεἰσελθεῖν,thanἢtwoδύοeyesὀφθαλμοὺςhavingἔχονταto be castβληθῆναιintoεἰςtheτὴνhellγέεννανof theτοῦfireπυρός.

And if your eye causes you to stumble, pluck it out and cast [it] from you. It is better for you to enter into life one-eyed than, having two eyes, to be cast into the Gehenna of fire.