Ancient Mezuzah in Doorway

The word "mezuzah" is Hebrew for doorpost. Moses commanded that the Word of God should be written on the doorposts of every house in order to keep His words constantly in their minds and in their hearts. At a later time the Jews took this literally, by placing Scriptures (Deuteronomy 6:4-9 and 11:13-21) on a small parchment scroll within a cylinder and upon each post of every room in their houses.

Link: https://bible-history.com/sketches/ancient-mezuzah-in-doorway