Genesis 39:11
One day he went into the house to do his work. None of the household servants were there.
Job 24:15
The eye of the adulterer also waits for the twilight. He says: 'No eye will see me.' Then he disguises his face.
Proverbs 9:17
Stolen waters are sweet, and bread eaten in secret is pleasant.
Jeremiah 23:24
Can a man hide himself in hiding places so I do not see him? asks Jehovah. Do I not fill the heavens and the earth? Declares Jehovah.
Malachi 3:5
I will approach you people for judgment! I will be a swift witness against the sorcerers, the adulterers and those acting fraudulently with the wages of the worker, the widow and the fatherless. I will be a speedy witness against those who swear falsely and take advantage of the stranger, and do not show me reverence, said Jehovah of Hosts.
Ephesians 5:3
Fornication, and all uncleanness, or covetousness, must not even be mentioned among you, as is proper among holy ones.
Ephesians 5:12
For the things that are done by them in secret is a shame even to speak about.