'Door posts' in the Bible

And the doorposts moved at the voice of the one who cried, and the house was filled with smoke.

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.