The following two passages from the Bible have already been mentioned by TheHumbleWun in posts 22 and 39. I'll mention them again, according to both the [Catholic] New American Bible and the [Protestant] King James Version:
Leviticus 26:27-29 (New American Bible)
Leviticus 26:27-29 (King James Version)
---------------------------
Matthew 18:8-9 (New American Bible)
Matthew 18:8-9 (King James Version)
"If, despite all this, you still persist in disobeying and defying me, I, also, will meet you with fiery defiance and will chastise you with sevenfold fiercer punishment for your sins, till you begin to eat the flesh of your own sons and daughters.
Leviticus 26:27-29 (New American Bible)
And if ye will not for all this hearken unto me, but walk contrary unto me; Then I will walk contrary unto you also in fury; and I, even I, will chastise you seven times for your sins. And ye shall eat the flesh of your sons, and the flesh of your daughters shall ye eat.
Leviticus 26:27-29 (King James Version)
---------------------------
If your hand or foot causes you to sin, cut it off and throw it away. It is better for you to enter into life maimed or crippled than with two hands or two feet to be thrown into eternal fire. And if your eye causes you to sin, tear it out and throw it away. It is better for you to enter into life with one eye than with two eyes to be thrown into fiery Gehenna.
Matthew 18:8-9 (New American Bible)
Wherefore if thy hand or thy foot offend thee, cut them off, and cast them from thee: it is better for thee to enter into life halt or maimed, rather than having two hands or two feet to be cast into everlasting fire. And if thine eye offend thee, pluck it out, and cast it from thee: it is better for thee to enter into life with one eye, rather than having two eyes to be cast into hell fire.
Matthew 18:8-9 (King James Version)