'Door posts' in the Bible

The blood shall be a sign for you on [the doorposts of] the houses where you live; when I see the blood I shall pass over you, and no affliction shall happen to you to destroy you when I strike the land of Egypt.

You shall write them on the doorposts of your house and on your gates.

You shall write them on the doorposts of your house and on your gates,

At that time Hezekiah cut away the gold framework from the doors of the temple of the Lord and from the doorposts which he had overlaid, and gave it to the king of Assyria.

by setting their threshold by My threshold and their doorpost beside My doorpost, with [only] the wall between Me and them. They have defiled and desecrated My holy name by the vile atrocities which they have committed. So I have consumed them in My anger.

The priest shall take some of the blood of the sin offering and put it on the door posts of the temple, on the four corners of the ledge of the altar, and on the posts of the gate of the inner courtyard.