KJV: 43 And if thy hand offend thee, cut it off: it is better for thee to enter into life maimed, than having two hands to go into hell, into the fire that never shall be quenched: 44 Where their worm dieth not, and the fire is not quenched. 45 And if thy foot offend thee, cut it off: it is better for thee to enter halt into life, than having two feet to be cast into hell, into the fire that never shall be quenched: 46 Where their worm dieth not, and the fire is not quenched. 47 And if thine eye offend thee, pluck it out: it is better for thee to enter into the kingdom of God with one eye, than having two eyes to be cast into hell fire: 48 Where their worm dieth not, and the fire is not quenched.

NIV: 43 If your hand causes you to stumble, cut it off. It is better for you to enter life maimed than with two hands to go into hell, where the fire never goes out. [44] 45 And if your foot causes you to stumble, cut it off. It is better for you to enter life crippled than to have two feet and be thrown into hell. [46] 47 And if your eye causes you to stumble, pluck it out. It is better for you to enter the kingdom of God with one eye than to have two eyes and be thrown into hell, 48 where “‘the worms that eat them do not die, and the fire is not quenched.’

ESV: 43 And if your hand causes you to sin, cut it off. It is better for you to enter life crippled than with two hands to go to hell, to the unquenchable fire. 45 And if your foot causes you to sin, cut it off. It is better for you to enter life lame than with two feet to be thrown into hell. 47 And if your eye causes you to sin, tear it out. It is better for you to enter the kingdom of God with one eye than with two eyes to be thrown into hell, 48 ‘where their worm does not die and the fire is not quenched.’

CSB: 43 “And if your hand causes you to fall away, cut it off. It is better for you to enter life maimed than to have two hands and go to hell, the unquenchable fire. 45 And if your foot causes you to fall away, cut it off. It is better for you to enter life lame than to have two feet and be thrown into hell. 47 And if your eye causes you to fall away, gouge it out. It is better for you to enter the kingdom of God with one eye than to have two eyes and be thrown into hell, 48 where their worm does not die, and the fire is not quenched.

Explanation

Mark 9:48 is replicated in both v 44 and verse 46.

Mark 9:48  The worms that eat them do not die, and the fire is not quenched.

Result

Nothing is lost except the unnecessary repetition.