You can always do a study on Ezekiel 8
7 Then he brought me to the entrance to the court. I looked, and I saw a hole in the wall. 8 He said to me, “Son of man, now dig into the wall.” So I dug into the wall and saw a doorway there.
9 And he said to me, “Go in and see the wicked and detestable things they are doing here.” 10 So I went in and looked, and I saw portrayed all over the walls all kinds of crawling things and unclean animals and all the idols of Israel. 11 In front of them stood seventy elders of Israel, and Jaazaniah son of Shaphan was standing among them. Each had a censer in his hand, and a fragrant cloud of incense was rising.
12 He said to me, “Son of man, have you seen what the elders of Israel are doing in the darkness, each at the shrine of his own idol? They say, ‘The Lord does not see us; the Lord has forsaken the land.’” 13 Again, he said, “You will see them doing things that are even more detestable.”