'Door posts' in the Bible
They're to take some of the blood and put it on the two doorposts and on the lintel of the houses where they eat the lamb.
Take a bundle of hyssop and dip it in the blood that is in the basin, and apply some of the blood in the basin to the lintel and the two doorposts. None of you is to go out of the doorway of his house until morning,
because the LORD will pass through to strike down the Egyptians, and when he sees the blood on the lintel and the two doorposts, the LORD will pass over the doorway, and won't allow the destroyer to enter your houses to strike you down.
Also write them upon the doorposts of your house and gates
Meanwhile, Samson had sex until midnight, then at midnight he got up, grabbed the doors, the two door posts, and the bars of the city gate, and uprooted them. He put them on his shoulders and carried them to the top of the mountain opposite Hebron.
Solomon also provided doors, lintels, and five-sided doorposts for the entrance to the inner sanctuary.
Solomon also provided four-sided doorposts made of cypress wood for the entrance to the outer sanctuary,
All the doorways and doorposts had rectangular frames, with the doorways facing each other in three tiers.
At that time, Hezekiah removed the doors to the LORD's Temple and the doorposts that he had overlaid with gold, and gave the gold to the king of Assyria.
Behind the doors and the doorposts you have set up your pagan sign." For in deserting me you have uncovered your bed you have climbed up into it and have opened it wide. And you have made a pact for yourself with them; you have loved their bed, you have looked on their private parts.
The door posts of the main sanctuary were square. Each door post was identical in appearance to the others.
The priest is to place some of the blood from the sin offering on the door posts of the Temple, on the four corners of the ledge around the altar, and on the posts of the gate leading to the inner court.
I saw the Lord standing beside the altar as he was saying, "Strike the doorposts so that the thresholds tremble, bringing them down on the heads of all of them. Those who survive I will kill with the sword. Those who flee will not escape. There will be no deliverance for the fugitives.