Ezekiel 40:47

So he measured the court, an hundred cubits long, and an hundred cubits broad, foursquare; and the altar that was before the house.

The court, an hundred cubits long, and ... broad four-square - not to be confounded with the inner court, or court of Israel, which was open to all who had sacrifices to bring, and which went round the three sides of the sacred territory, 100 cubits broad. This court was 100 cubits square, and had the altar in it, in front of the temple. It was the court of the priests, and hence, is connected with those who had charge of the altar and the music. The description here is brief, as the things connected with this portion were from the first divinely regulated.