Hebrews 13:4

‘And you shall not lie sexually with your neighbor’s wife, to be defiled with her.

“If a man is found lying with a married woman, then both of them shall die, the man who lay with the woman, and the woman; thus you shall purge the evil from Israel.

Flee sexual immorality. Every other sin that a man commits is outside the body, but the sexually immoral man sins against his own body.

and that no man transgress and defraud his brother in the matter because the Lord is the avenger in all these things, just as we also told you before and solemnly warned you.

who forbid marriage and advocate abstaining from foods which God created to be shared in with thanksgiving by those who believe and know the truth.

that also there be no sexually immoral or godless person like Esau, who sold his own birthright for a single meal.