And whosoever shall offend one of these little ones that believe in Me, it is better for him that a millstone were hanged about his neck, and he were cast into the sea. 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: where their worm dieth not, and the fire is not quenched. 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: where their worm dieth not, and the fire is not quenched. 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: where their worm dieth not, and the fire is not quenched.
For every one shall be salted with fire, and every sacrifice shall be salted with salt. Salt is good: but if the salt have lost his saltness, wherewith will ye season it? Have salt in yourselves, and have peace one with another.
Mark 9:42-50
How do people offend those who believe in Jesus? By false testimony, accusing us of doing things we did not do, or reminding us of things that we did wrong, but we have already received forgiveness from the Lord. By torture, and by death, and many otherr ways.
Any one who offends one of these; do you see how serious Jesus takes this matter? If your offense is done with your hand, you are to cut it off. If offense is done with your foot, it too, must be cut off. If the offense is done with the eye, then, that eye is to be plucked out. These drastic measures of showing repentance are not necessary, but show to us the extremities that would keep the offender from experiencing eternal death. If you have offended one of those who believe in Jesus, there is no need to cut the offending hand, the offending foot, or the offending eye and that is for you to believe Him too.
There is only one way to avoid the destruction of sin and death; and that is by way of the cross of Jesus Christ where He died in our place, taking the whole wrath of God upon Himself paying our sin debt. A debt he did not owe. He was also buried, and He rose up from the grave very much alive. Ask Him for forgiveness and He will give it.