Jamieson-Fausset-Brown on Ezekiel 48:15
The five thousand rods, apportioned to the city out of the twenty-five thousand square, are to be laid off in a square of four thousand five hundred, with the two hundred fifty all around for suburbs.
profane--that is, not strictly sacred as the sacerdotal portions, but applied to secular uses.
Adam Clarke on Ezekiel 48:15
And the five thousand that are left - The territory of the Levites was twenty-five thousand square cubits, Eze 48:20, But their city was only four thousand five hundred square cubits, see Eze 48:13 and Eze 48:16; there remained, therefore, ten thousand cubits square to be divided, of which five thousand cubits in breadth, by twenty-five thousand in length, on the east and west sides, were reserved for a sort of second city; or for suburbs where laymen might dwell who were employed by those priests and Levites who lodged in the temple and in the city, Eze 48:18. And another space of one thousand cubits in breadth, by twenty-five thousand in length, which extended only from north to south, was…
Read the whole note in the consoleJohn Gill on Ezekiel 48:19
And they that serve the city shall serve it out of all the tribes of Israel. Whether they be civil magistrates, or ministers of the word, they shall be of Israel, and be Israelites indeed; and shall be taken out of the several tribes; some out of one tribe, and some out of another; all shall have the honour, as well as the labour, of serving the church and interest of Christ; yea, all true Israelites shall contribute as much as in them lies to the service of it.
Tyndale Open Study Notes on Ezekiel 48:15-20
To the south was a narrower strip for public use where the city was located. The overall shape of the central area was thus a square. The city was a visible symbol and focus of unity for the twelve tribes, and home to residents from the various tribes.
Rashi on Ezekiel 48:19