Matthew Poole and continuators on Judges 1:16

16 ¶ And the children of the Kenite, Moses father in law , went up out of the city of palmtrees t, with the children of Judah, into the wilderness of Judah, which lieth in the south of Arad , and they went and dwelt among the people .

i. e. of Iethro, so called from the people from whom he descended, Numb. 24. 21, 22. And, whatsoever he did, it is evident, that his Posterity came into Canaan with the Israelites, and were there seated with them. See Iudg. 4. 11. 17. and 5. 24. 1 Sam. 15. 6. 1 Chron. 2. 55.

i. e. From Iericho so called, Deut. 34. 3. not the City, which was utterly destroyed; but the Territory belonging to it, where it seems they were seated as in a most pleasant, and fruitful, and safe place, according to the promise made by Moses to their Father, Numb. 10. 31, 32. and whence they might remove, either to avoid the Society or Molestation of the Neighbouring Canaanites; or out of love to the children of Iudah, whom they went to; or to avoid temptations to Luxury, and exercise themselves in self-denial, and contempt of the present evil World, and the Lusts thereof; as may be thought from Ier. 35. 6, &c. Or for some other cause unknown to us at this distance.

In the Southern part of the Land of Canaan, where Arad was, Numb. 21. 1. u i. e. Some of them, for others of them dwelt in the contrary quarter, in the most Northern part of the Land.

Heb. that people, to wit, those Children of Iudah that lived there.