'Door posts' in the Bible

then his master must bring him to the judges, and he will bring him to the door or the doorposts, and his master will pierce his ear with an awl, and he shall serve him forever.

In the same way he made doorposts of olive wood for the entrance to the main hall, only with four-sided pillars.

The doorposts of the outer sanctuary were square. In front of the sanctuary one doorpost looked just like the other.