Judges 3:22-24

3:22 The handle went in after the blade, and the fat closed around the blade, for Ehud did not pull the sword out of his belly. 3:23 As Ehud went out into the vestibule, he closed the doors of the upper room behind him and locked them.

3:24 When Ehud had left, Eglon’s servants came and saw the locked doors of the upper room. They said, “He must be relieving himself in the well-ventilated inner room.”