Matthew 5:28
But I say to you that whoever looks with lust at a woman has already committed adultery with her in his heart.
1 Corinthians 6:9-11
Do you not know that the wicked will not inherit the kingdom of God? Do not be deceived. None who are immoral, or idolaters, or adulterers, or catamites, or sodomites,
1 Corinthians 10:20
On the contrary, what the heathen sacrifice they sacrifice to demons and not to God, and I do not want you to have communion with demons.
Galatians 5:19-21
Now the works of the flesh are manifest; such, for instance, as fornication, impurity, indecency,
Hebrews 13:4
Let marriage be held in honor by all, and the marriage bed be undefiled; for fornicators and adulterers will God judge.