2 Kings 17:9
And the children of Israel did secretly against the Lord their God things which were not right, building high places for themselves in all their towns, from the tower of the watchmen to the walled town.
2 Kings 18:8
He overcame the Philistines as far as Gaza and its limits, from the tower of the watchman to the walled town.
Deuteronomy 13:6
If your brother, the son of your mother, or your son or your daughter or the wife of your heart, or the friend who is as dear to you as your life, working on you secretly says to you, Let us go and give worship to other gods, strange to you and to your fathers;
Deuteronomy 27:15
Cursed is the man who makes any image of wood or stone or metal, disgusting to the Lord, the work of man's hands, and puts it up in secret. And let all the people say, So be it.
Job 31:27
A secret feeling of worship came into my heart, and my hand gave kisses from my mouth;
Ezekiel 8:12
And he said to me, Son of man, have you seen what the responsible men of the children of Israel do in the dark, every man in his room of pictured images? for they say, The Lord does not see us; the Lord has gone away from the land.
Hosea 12:11
In Gilead there is evil. They are quite without value; in Gilgal they make offerings of oxen; truly their altars are like masses of stones in the hollows of a ploughed field.