Matthew Poole and continuators on Ezekiel 44:3

3 It is for the prince ; the prince, he shall sit in it to eat bread before the LORD; he shall enter by the way of the porch of that gate, and shall go out by the way of the same.

For the King say some, if so, then the door shut was the door, not of the Temple, but of the East Gate of the Priests Court. The high Priest, and the second Priest, say others, and indeed this most likely.

The King might sit before the Lord, others might not, and the Priests stood ministring, as Hebrews 10.11. Perhaps the High Priest might have some priviledge to sit, when others might not.

If understood of the King, 'twas his eating of the Sacrifice, that part of it which was allowed to the offerer, if this Prince be the High Priest, this bread was the shew bread, which it seems he might sit and eat in or near the Porch of the Gate, whereas other Priests were bound to eat in the common refectory, as appears, chap. 42. verse 13. let. s.

He may, 'tis his priviledge, or he shall, that is, 'tis his duty to enter at this, and to come out at it, that the people may know which way to look, when they would see their High Priest enter to make atonement, which may be mystical, and include our looking to the great High Priest.