Judges 3:15-19

But when the sons of Israel cried out to the Lord, the Lord raised up a deliverer for them, Ehud the son of Gera, the Benjaminite, a left-handed man. And the sons of Israel sent tribute by him to Eglon the king of Moab.

Now Ehud made himself a sword which had two edges, a cubit in length, and he strapped it on his right thigh under his cloak.

Then he presented the tribute to Eglon king of Moab. Now Eglon was a very fat man.

And it came about, when he had finished presenting the tribute, that Ehud sent away the people who had carried the tribute.

But he himself turned back from the idols which were at Gilgal, and said, “I have a secret message for you, O king.” And the king said, “Silence!” And all who were attending him left him.