BIBLICAL BACKGROUND

Num 21:10-13 The sons of Israel camp by the land of Moab
10 The Israelites set out, and camped in Oboth. 11 They set out from Oboth, and camped at Iye-abarim [Greek: Achelgai], in the wilderness bordering Moab toward the sunrise.12 From there they set out, and camped in the Wadi Zered. 13 From there they set out, and camped on the other side of the Arnon, in the wilderness that extends from the boundary of the Amorites; for the Arnon is the boundary of Moab, between Moab and the Amorites.

Deut. 36:5-6 The death of Moses
Then Moses, the servant of the Lord, died there in the land of Moab, at the LORD's command. 6 He was buried in a valley [Hebrew: gai] in the land of Moab, opposite Beth-peor, but no one knows his burial place to this day.