What does Judges 3:23 mean?

Then Ehud went forth into the porch, and shut the doors of the upper room upon him, and locked them.

Then Ehud went forth through the porch, and shut the doors of the parlour upon him, and locked them.

Then Ehud went forth into the porch, and shut the doors of the upper room upon him, and locked them.

Then Ehud went out into the covered way, shutting the doors of the summer-house on him and locking them.

And Ehud goeth out at the porch, and shutteth the doors of the upper chamber upon him, and hath bolted <FI>it<Fi> ;

And Aod carefully shutting the doors of the parlour, and locking them,

And Ehud went out into the portico, and shut the doors of the upper-chamber upon him, and bolted them.