This chapter gives a short account of the conquests made by the Israelites, both in the times of Moses and of Joshua, and first of the kingdom of Sihon and Og on the other side Jordan, in the times of Moses, and which he gave to the two tribes of Reuben and Gad, and the half tribe of Manasseh, and which are particularly described, Jos 12:1-6; and then of the kings and the countries on this side Jordan whom Joshua conquered, Jos 12:7,8; and the names of the thirty one kingdoms are recited, that so it might be exactly known and observed what were afterwards divided among the tribes and possessed by them, Jos 12:9-24.
The Brenton translation of the Septuagint is in the public domain.