Genesis 39:11
About this time, he went into the house to do his work, and there were none of the men of the house inside.
Job 24:15
The eye also of the adulterer waits for the twilight, saying, 'No eye shall see me.' He disguises his face.
Proverbs 9:17
"Stolen water is sweet. Food eaten in secret is pleasant."
Jeremiah 23:24
Can any hide himself in secret places so that I shall not see him?' says the LORD. 'Do I not fill heaven and earth?' says the LORD.
Malachi 3:5
I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against the perjurers, and against those who oppress the hireling in his wages, the widow, and the fatherless, and who deprive the foreigner of justice, and do not fear me," says the LORD of hosts.
Ephesians 5:3
But sexual immorality, and all uncleanness, or covetousness, let it not even be mentioned among you, as becomes saints;
Ephesians 5:12
For the things which are done by them in secret, it is a shame even to speak of.