King Arad the Canaanite - Rather, “the Canaanite, the king of Arad.” Arad stood on a small hill, now called Tel-Arad, 20 miles south of Hebron.
In the south - See Numbers 13:17, Numbers 13:22.
By the way of the spies - i. e. through the desert of Zin, the route which the spies sent out by Moses 38 years before had adopted (compare Numbers 13:21).
He fought against Israel - This attack (compare Numbers 20:1 and note), can hardly have taken place after the death of Aaron. It was most probably made just when the camp broke up from Kadesh, and the ultimate direction of the march was not as yet pronounced. The order of the narrative in these chapters, as occasionally elsewhere in this book (compare Numbers 9:1, etc.), is not that of time, but of subject matter; and the war against Arad is introduced here as the first of the series of victories gained under Moses, which the historian now takes in hand to narrate.