Matthew 5:29-30

And therefore if thy right eye cause thee to offend, pluck it out and cast it from thee; for it is better for thee that one part of thee perish, than that thy whole body should be cast into hell:

Mark 9:43-49

And if thy hand cause thee to offend, 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 will never be extinguished;

Romans 8:13

for if ye live after the flesh, ye shall die; but if by the Spirit ye mortify the deeds of the body, ye shall 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
And therefore if thy right eye cause thee to offend, pluck it out and cast it from thee; for it is better for thee that one part of thee perish, than that thy whole body should be cast into hell:
Mark 9:43
And if thy hand cause thee to offend, 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 will never be extinguished;
Romans 8:13
for if ye live after the flesh, ye shall die; but if by the Spirit ye mortify the deeds of the body, ye shall live.