And he measured the length of the room, twenty cubits, and its breadth, twenty cubits, across the nave. And he said to me, "This is the Most Holy Place."
Ezekiel's tour of the temple proper began with a look at the Most Holy Place. This was the one room reserved for the biggest day of the year for Israel, the Day of Atonement. Only the High Priest could enter the Most Holy Place on this day. And there, one day each year was sprinkled the blood of a yearly unique sacrifice meant to atone for Israel's sin.
In the Most Holy Place stood the ark of the covenant. And in this place the presence of God was held in most sacred honor. This was the center of Jewish worship. And the temple had to be appreciated and understood from this part of its structure first.
Ezekiel's vision served as a reminder to exiled Israel of just how holy God is. They were reminded of the most sacred room in the temple. It had to draw them to the seriousness of sin and awesome scope of God's power to save. This idealized temple vision would continue to make the people aware of the holiness of God and the sacredness of their worship of The Lord Who dwelt with His presence among them in the Most Holy Place.