12 all the kingdom of Og in Bashan, who reigned in Ashtaroth and in Edrei (who was left of the remnant of the Rephaim); for Moses attacked these, and drove them out.
Joshua 13:12 Cross References - WEB
Numbers 21:23-35
23 Sihon would not allow Israel to pass through his border, but Sihon gathered all his people together, and went out against Israel into the wilderness, and came to Jahaz. He fought against Israel.
24 Israel struck him with the edge of the sword, and possessed his land from the Arnon to the Jabbok, even to the children of Ammon; for the border of the children of Ammon was fortified.
25 Israel took all these cities. Israel lived in all the cities of the Amorites, in Heshbon, and in all its villages.
26 For Heshbon was the city of Sihon the king of the Amorites, who had fought against the former king of Moab, and taken all his land out of his hand, even to the Arnon.
27 Therefore those who speak in proverbs say, “Come to Heshbon. Let the city of Sihon be built and established;
28 for a fire has gone out of Heshbon, a flame from the city of Sihon. It has devoured Ar of Moab, The lords of the high places of the Arnon.
29 Woe to you, Moab! You are undone, people of Chemosh! He has given his sons as fugitives, and his daughters into captivity, to Sihon king of the Amorites.
30 We have shot at them. Heshbon has perished even to Dibon. We have laid waste even to Nophah, Which reaches to Medeba.”
31 Thus Israel lived in the land of the Amorites.
32 Moses sent to spy out Jazer. They took its villages, and drove out the Amorites who were there.
33 They turned and went up by the way of Bashan. Og the king of Bashan went out against them, he and all his people, to battle at Edrei.
34 Yahweh said to Moses, “Don’t fear him, for I have delivered him into your hand, with all his people, and his land. You shall do to him as you did to Sihon king of the Amorites, who lived at Heshbon.”
35 So they struck him, with his sons and all his people, until there were no survivors; and they possessed his land.
Deuteronomy 3:10-11
10 We took all the cities of the plain, and all Gilead, and all Bashan, to Salecah and Edrei, cities of the kingdom of Og in Bashan.
11 (For only Og king of Bashan remained of the remnant of the Rephaim. Behold, his bedstead was a bedstead of iron. Isn’t it in Rabbah of the children of Ammon? Nine cubits was its length, and four cubits its width, after the cubit of a man.)
Joshua 12:4
4 and the border of Og king of Bashan, of the remnant of the Rephaim, who lived at Ashtaroth and at Edrei,
Joshua 14:3-4
3 For Moses had given the inheritance of the two tribes and the half-tribe beyond the Jordan; but to the Levites he gave no inheritance among them.
4 For the children of Joseph were two tribes, Manasseh and Ephraim. They gave no portion to the Levites in the land, except cities to dwell in, with their pasture lands for their livestock and for their property.