Judges 3:18-20

18Now when Ehud had finished presenting the tribute, he dismissed the people who had carried the tribute,

19but he himself turned back, at the idols that were near Gilgal, and said, “I have a secret message for you, O king.” “Keep silence!” he replied, so all his attendants left him.

20Then Ehud approached him while he was sitting alone in a roof chamber where it was cool, and said, “I have a message from God for you,” so he arose from his throne.