Deuteronomy 2:15

12 And the Horites in earlier times were living in Seir, but the children of Esau took their place; they sent destruction on them and took their land for themselves, as Israel did to the land of his heritage which the Lord gave them.)

13 Get up now, and go over the stream Zered. So we went over the stream Zered.

14 Thirty-eight years had gone by from the time when we came away from Kadesh-barnea till we went over the stream Zered; by that time all the generation of the men of war among us were dead, as the Lord had said.

15 For the hand of the Lord was against them, working their destruction, till all were dead.

16 So when death had overtaken all the men of war among the people,

17 The word of the Lord came to me, saying,

18 You are about to go by Ar, the limit of the country of Moab;