Matthew 5:27-28, 31-32
27 “You have heard that it was said, ‘You shall not commit adultery.’
28 But I say to you that everyone who looks at a woman with lustful intent has already committed adultery with her in his heart.
31 “It was also said, ‘Whoever divorces his wife, let him give her a certificate of divorce.’
32 But I say to you that everyone who divorces his wife, except on the ground of sexual immorality,
makes her commit adultery, and whoever marries a divorced woman commits adultery.
1 Corinthians 6:18
18 Flee from sexual immorality. Every other sin a person commits is outside the body,
but the sexually immoral person sins against his own body.