Judges 3:22-26

The hilt of the sword also went in after the blade, and the fat closed over the blade because he did not pull the sword out of his belly; and the refuse came out.

Then Ehud went out into the vestibule, and shut the doors of the roof chamber behind him, and locked them.

When he had left, the king’s servants came and looked, and behold, the doors of the roof chamber were locked; and they said, “Undoubtedly he is relieving himself in the cool room.”

So they waited until it would have been shameful to wait longer; but behold, he did not open the doors of the roof chamber. So they took the key and opened them, and behold, their master had fallen to the floor dead.

Now Ehud escaped while they were hesitating, and he passed by the idols and escaped to Seirah.