He built twenty cubits on the hinder part of the house with boards of cedar from the floor to the walls [of the ceiling]: he built [them] for it within, for an oracle, even for the most holy place.
and the LORD said to Moshe, *Tell Aharon your brother, not to come at all times into the Most Holy Place within the veil, before the mercy seat which is on the ark; lest he die: for I will appear in the cloud on the mercy seat.