'Locked' in the Bible

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

When he was gone out, his servants came; and when they saw that, behold, the doors of the parlour were locked, they said, Surely he covereth his feet in his summer chamber.

There was a strong tower inside the city, and all the men, women, and lords of the city fled there. They locked themselves in and went up to the roof of the tower.