1 sn Ar was a Moabite city on the Arnon River east of the Dead Sea. It is mentioned elsewhere in the “Book of the Wars of Yahweh” (Num 21:15; cf. 21:28; Isa 15:1). Here it is synonymous with the whole land of Moab.
2 sn The descendants of Lot. Following the destruction of the cities of the plain, Sodom and Gomorrah, as God’s judgment, Lot fathered two sons by his two daughters, namely, Moab and Ammon (Gen 19:30-38). Thus, these descendants of Lot in and around Ar were the Moabites.
3 sn Emites. These giant people, like the Anakites (Deut 1:28), were also known as Rephaites (v. 11). They appear elsewhere in the narrative of the invasion of the kings of the east where they are said to have lived around Shaveh Kiriathaim, perhaps 9 to 11 mi (15 to 18 km) east of the north end of the Dead Sea (Gen 14:5).
5 sn Rephaites. The earliest reference to this infamous giant race is, again, in the story of the invasion of the eastern kings (Gen 14:5). They lived around Ashteroth Karnaim, probably modern Tell Ashtarah (cf. Deut 1:4), in the Bashan plateau east of the Sea of Galilee. Og, king of Bashan, was a Rephaite (Deut 3:11; Josh 12:4; 13:12). Other texts speak of them or their kinfolk in both Transjordan (Deut 2:20; 3:13) and Canaan (Josh 11:21-22; 14:12, 15; 15:13-14; Judg 1:20; 1 Sam 17:4; 1 Chr 20:4-8). They also appear in extra-biblical literature, especially in connection with the city state of Ugarit. See C. L’Heureux, “Ugaritic and Biblical Rephaim,” HTR 67 (1974): 265-74.