23 Then Ehud went out to the porcha ; he shut the doors of the upper room behind him and locked them.

Read Judges 3:23 Using Other Translations

Then Ehud went forth through the porch, and shut the doors of the parlour upon him, and locked them.
Then Ehud went out into the porch and closed the doors of the roof chamber behind him and locked them.
Then Ehud closed and locked the doors of the room and escaped down the latrine.