Joshua 13:8

8 From Jordan to the great sea westward thou shalt give it : the great sea shall be the boundary. to the two tribes and to the half tribe of Manasse, to Ruben and to Gad Moses gave beyond Jordan: Moses the servant of the Lord gave to them eastward,

Joshua 13:8 Meaning and Commentary

Joshua 13:8

With whom the Reubenites and the Gadites have received their
inheritance
That is, along with the half tribe of Manasseh, but not with that half of it before mentioned, who was to haven division of a part with the nine tribes, but with the other half of the tribe settled beyond Jordan; with them the tribes of Reuben and Gad had received their portion at their own request, and so were to have no share in the present distribution:

which Moses gave them beyond Jordan eastward;
at their desire, ( Numbers 32:1-5 ) , and upon certain conditions to be performed by them, ( Numbers 32:20-23 ) ;

[even] as Moses the servant of the Lord gave them;
this character of Moses, as the "servant of the Lord", seems to be observed to show that he gave the said tribes their inheritance: according to the will of God, and in obedience to it: here end the words of the Lord to Joshua, and next follows an account of the land given to the two tribes and a half described by the writer of this book.

Joshua 13:8 In-Context

6 every one that inhabits the hill country from Libanus as far as Masereth Memphomaim. All the Sidonians, I will destroy them from before Israel; but do thou give them by inheritance to Israel, as I charged thee.
7 And now divide this land by lot to the nine tribes, and to the half tribe of Manasse.
8 From Jordan to the great sea westward thou shalt give it : the great sea shall be the boundary. to the two tribes and to the half tribe of Manasse, to Ruben and to Gad Moses gave beyond Jordan: Moses the servant of the Lord gave to them eastward,
9 from Aroer, which is on the bank of the brook of Arnon, and the city in the midst of the valley, and all Misor from Maedaban.
10 All the cities of Seon king of the Amorites, who reigned from Esebon to the coasts of the children of Ammon;

Footnotes 1

The Brenton translation of the Septuagint is in the public domain.