“Moreover from what is possessed by the Levites and from what is possessed by the city, being in the midst of what is the prince's, between the border of Judah and the border of Benjamin, shall be for the prince.”
We see here a slight ambivalence and recognition that while the Levite portion and the city portion have been described as part of the holy Gift-offering (Ezekiel 48:18; Ezekiel 48:20) they are only so secondarily. In Ezekiel 48:21 the Levite portion is included in the holy Gift-offering and the city excluded. Here both seem to be excluded from the idea of the holy Gift-offering, although being along with it territory to which the prince's is adjacent. There are thus clear grades of holiness.
The Remainder of the Tribes (Ezekiel 48:23-29).