Matthew Poole and continuators on Judges 3:23

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

With a composed Countenance and Gate, without any fear; being well assured, that God who by his extraordinary Call had put him upon that enterprise, would by his special Providence preserve him, and carry him through it.

Either upon the King, or upon or after himself.

Either by pulling it close after him, as we do when Doors have spring-Locks; or by taking the Key with him for more caution; and this he did, that they supposing the King to be retired, might wait till he was gone.