Matthew 5:28
But I say unto you that every one looking on a woman in order to lust after her hath already committed adultery with her in his heart.
1 Corinthians 6:9-11
Do you not know that the unrighteous shall not inherit the kingdom of God? He not deceived: neither fornicators, nor idolaters, nor adulterers, nor catamites, nor Sodomites,
1 Corinthians 10:20
But those things which they sacrifice, they sacrifice to demons, and not to God. But I do not wish you to be the communicants of demons.
Galatians 5:19-21
But the works of carnality are manifest, which are fornication, uncleanness, debauchery,
Hebrews 13:4
Marriage is honorable among all, and the couch undefiled: for God will judge fornicators and adulterers.