Job 24:15

24:15 The eye also of the adulterer waiteth for the twilight, saying, No eye shall see me: and disguiseth [his] face.

Proverbs 9:17

9:17 Stolen waters are sweet, and bread [eaten] in secret is pleasant.

Jeremiah 23:24

23:24 Can any hide himself in secret places that I shall not see him? saith the LORD. Do not I fill heaven and earth? saith the LORD.

Malachi 3:5

3:5 And I will come near to you to judgment; and I will be a swift witness against the sorcerers, and against the adulterers, and against false swearers, and against those that oppress the hireling in [his] wages, the widow, and the fatherless, and that turn aside the stranger [from his right], and fear not me, saith the LORD of hosts.

Ephesians 5:3

5:3 But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints;

Ephesians 5:12

5:12 For it is a shame even to speak of those things which are done of them in secret.