Matthew 5:29-30

If your right eye is a snare to you, take it out and throw it away. It would be best for you to lose one part of your body, and not to have the whole of it thrown into the Pit.

Mark 9:43-49

If your hand proves a snare to you, cut it off. It would be better for you to enter the Life maimed, than to have both your hands and go into the Pit, into the inextinguishable fire.

Romans 8:13

If you live in obedience to your earthly nature, you will inevitably die; but if, by the power of the Spirit, you put an end to the evil habits of the body, you will live.

Treasury of Scripture Knowledge

Summary

Though he spare it, and forsake it not; but keep it still within his mouth:

Bible References

Spare it

Matthew 5:29
If your right eye is a snare to you, take it out and throw it away. It would be best for you to lose one part of your body, and not to have the whole of it thrown into the Pit.
Mark 9:43
If your hand proves a snare to you, cut it off. It would be better for you to enter the Life maimed, than to have both your hands and go into the Pit, into the inextinguishable fire.
Romans 8:13
If you live in obedience to your earthly nature, you will inevitably die; but if, by the power of the Spirit, you put an end to the evil habits of the body, you will live.