Jamieson, Fausset and Brown on Ezekiel 47:13

13. The redivision of the land: the boundaries. The latter are substantially the same as those given by Moses in Nu 34:1-29; they here begin with the north, but in Numbers they begin with the south (Nu 34:3). It is only Canaan proper, exclusive of the possession of the two and a half tribes beyond Jordan, that is here divided.

Joseph ... two portions--according to the original promise of Jacob (Ge 48:5, 22). Joseph's sons were given the birthright forfeited by Reuben, the first-born (1Ch 5:1). Therefore the former is here put first. His two sons having distinct portions make up the whole number twelve portions, as he had just before specified "twelve tribes of Israel"; for Levi had no separate inheritance, so that he is not reckoned in the twelve.