Ezekiel 41:3-4

Then he went inside [the inner sanctuary] and measured each side pillar of the doorway, two cubits, and the doorway, six cubits [high], and the width of the doorway, seven cubits. [Heb 9:6, 7; 10:19-25] He measured the length [of the interior of the inner sanctuary], twenty cubits, and the width, twenty cubits, opposite the nave (outer sanctuary); and he said to me, “This is the Most Holy Place.”