'Bedchamber' in the Bible

yea, they come in to the house, and he is lying on his bed, in the inner part of his bed-chamber, and they smite him, and put him to death, and turn aside his head, and they take his head, and go the way of the plain all the night,

And one of his servants saith, 'Nay, my lord, O king, for Elisha the prophet, who is in Israel, declareth to the king of Israel the words that thou speakest in the inner part of thy bed-chamber.'

Even in thy mind a king revile not, And in the inner parts of thy bed-chamber Revile not the rich: For a fowl of the heavens causeth the voice to go, And a possessor of wings declareth the word.