Verse 20. Five hundred broad - Each reed was above three yards and an half, so that it was about eight miles round. Thus large were the suburbs of this mystical temple, signifying the great extent of the church in gospel times. It is in part fulfilled already, by the accession of the Gentiles to the church: and will be throughly accomplished, when the fulness of the Gentiles shall come in, and all Israel shall be saved. A separation - To distinguish, and accordingly to exclude, or admit persons, for all might not go in.