The "sanctuary" here probably means the whole temple precincts.

Suburbs - literally, as margin. To mark out more distinctly the sacred precincts, a vacant space of fifty cubits was left on all sides.

Of this there shall be for the sanctuary - See the plan, A.

Of this there shall be for the sanctuary,.... Or temple, the house before described in the preceding chapters:

five hundred in length, and five hundred in breadth, square round about: that is, five hundred reeds square, as is manifest from Ezekiel 42:16, and this denotes the largeness, perfection, and stability of the church of Christ, which the sanctuary was a type of:

and fifty cubits round about for the suburbs thereof; which were a void place of fifty cubits round about the sanctuary, measuring from the wall to that; this was done in reverence to the holy place, and to show that we should not rush hastily into the house of God, and church of Christ, but first pass through the suburbs or open place. Cubits being here mentioned, show that reeds are to be understood where the kind of measure is not expressed.

Of this there shall be for the sanctuary five hundred in length, with five hundred in breadth, square round about; and fifty cubits round about for the suburbs thereof.

45:2 Of this - Whole portion of twenty five thousand cubits long, or twelve miles and half, and ten thousand broad, or five miles and a little more. For the sanctuary - For a platform for the sanctuary, both house and court.

suburbs: or, void places

45:1-25 In the period here foretold, the worship and the ministers of God will be provided for; the princes will rule with justice, as holding their power under Christ; the people will live in peace, ease, and godliness. These things seem to be represented in language taken from the customs of the times in which the prophet wrote. Christ is our Passover that is sacrificed for us: we celebrate the memorial of that sacrifice, and feast upon it, triumphing in our deliverance out of the Egyptian slavery of sin, and our preservation from the destroying sword of Divine justice, in the Lord's supper, which is our passover feast; as the whole Christian life is, and must be, the feast of the unleavened bread of sincerity and truth.