Job 15:19

to whom alone the land was given when no foreigner passed among them. ¹ 

Ge 10:25,32; De 32:8; Joe 3:17

¹ sn Eliphaz probably thinks that Edom was the proverbial home of wisdom, and so the reference here would be to his own people. If, as many interpret, the biblical writer is using these accounts to put Yahwistic ideas into the discussion, then the reference would be to Canaan at the time of the fathers. At any rate, the tradition of wisdom to Eliphaz has not been polluted by foreigners, but has retained its pure and moral nature from antiquity.