Genesis 39:11
One day he went into the house to do his work when none of the household servants were there in the house.
Job 24:15
And the eye of the adulterer watches for the twilight, thinking, 'No eye can see me,' and covers his face with a mask.
Proverbs 9:17
"Stolen waters are sweet, and food obtained in secret is pleasant!"
Jeremiah 23:24
"Do you really think anyone can hide himself where I cannot see him?" the Lord asks. "Do you not know that I am everywhere?" the Lord asks.
Malachi 3:5
"I will come to you in judgment. I will be quick to testify against those who practice divination, those who commit adultery, those who break promises, and those who exploit workers, widows, and orphans, who refuse to help the immigrant and in this way show they do not fear me," says the Lord who rules over all.
Ephesians 5:3
But among you there must not be either sexual immorality, impurity of any kind, or greed, as these are not fitting for the saints.
Ephesians 5:12
For the things they do in secret are shameful even to mention.