Judges 3:14-16

And the people of Israel served Eglon the king of Moab eighteen years. Then the people of Israel cried out to the LORD, and the LORD raised up for them a deliverer, Ehud, the son of Gera, the Benjaminite, a left-handed man. The people of Israel sent tribute by him to Eglon the king of Moab. And Ehud made for himself a sword with two edges, a cubit in length, and he bound it on his right thigh under his clothes.