'Door' in the Bible

In those days, while Mordecai was seated at the king's doorway, two of the king's servants, Bigthan and Teresh, keepers of the door, being angry, were looking for a chance to make an attack on King Ahasuerus.

And he came even before the king's doorway; for no one might come inside the king's door clothed in haircloth.

It came out that it was recorded in the book how Mordecai had given word of the designs of Bigthana and Teresh, two of the king's servants, keepers of the door, by whom an attack on the king had been designed.