Ezekiel 40:28-31

Then he brought me to the inner court through the south gate, and he measured the south gate. It was of the same size as the others. Its side rooms, its jambs, and its vestibule were of the same size as the others, and both it and its vestibule had windows all around. Its length was fifty cubits, and its breadth twenty-five cubits. And there were vestibules all around, twenty-five cubits long and five cubits broad. Its vestibule faced the outer court, and palm trees were on its jambs, and its stairway had eight steps.