We may observe in these verses, 1. That here is a whole family of craftsmen, handicraft tradesmen, that applied themselves to all sorts of manufactures, in which they were ingenious and industrious above their neighbours, Ch1 4:14. There was a valley where they lived which was, from them, called the valley of craftsmen. Those that are craftsmen are not therefore to be looked upon as mean men. These craftsmen, though two of a trade often disagree, yet chose to live together, for the improving of arts by comparing notes, and that they might support one another's reputation. 2. That one of these married the daughter of Pharaoh (Ch1 4:18), which was the common name of the kings of Egypt. If an Israelite in Egypt before the bondage began, while Joseph's merits were yet fresh in mind, was preferred to be the king's son-in-law, it is not to be thought strange: few Israelites could, like Moses, refuse an alliance with the court. 3. That another is said to be the father of the house of those that wrought fine linen, Ch1 4:21. It is inserted in their genealogy as their honour that they were the best weavers in the kingdom, and they brought up their children, from one generation to another, to the same business, not aiming to make them gentlemen. This Laadah is said to be the father of those that wrought fine linen, as before the flood Jubal is said to be the father of musicians and Jabal of shepherds, etc. His posterity inhabited the city of Mareshah, the manufacture or staple commodity of which place was linen-cloth, with which their kings and priests were clothed. 4. That another family had had dominion in Moab, but were now in servitude in Babylon, Ch1 4:22, Ch1 4:23. (1.) It was found among the ancient things that they had the dominion in Moab. Probably in David's time, when that country was conquered, they transplanted themselves thither, and were put in places of power there, which they held for several generations; but this was a great while ago, time out of mind. (2.) Their posterity were now potters and gardeners, as is supposed in Babylon, where they dwelt with the king for his work, got a good livelihood by their industry, and therefore cared not for returning with their brethren to their own land, after the years of captivity had expired. Those that now have dominion know not what their posterity may be reduced to, nor what mean employments they may be glad to take up with. But those were unworthy the name of Israelites that would dwell among plants and hedges rather than be at the pains to return to Canaan.

And his wife Jehudijah - The Targum considers the names in this verse as epithets of Moses:

"And his wife Jehuditha educated Moses after she had drawn him out of the water: and she called his name Jered, because he caused the manna to descend upon Israel; and Prince Gedor, because he restored the desolations of Israel; Heber also, because he joined Israel to their heavenly Father; and Prince Socho, because he overshadowed Israel with his righteousness, and Jekuthiel, because the Israelites waited on the God of heaven in his time, forty years in the desert; and prince Zanoah, because God, on his account, had passed by the sins of Israel. These names Bithiah, the daughter of Pharaoh, called him by the spirit of prophecy, for she became a proselyte; and Mered took her to himself to wife: he is Caleb, and was so called because he opposed the counsel of the spies." - T. A similar explanation is given by Jarchi.

And the sons of Shimon,.... Perhaps another son of Mered by his last wife, or the same with Shammai, Ch1 4:17 were

Amnon, and Rinnah, Benhanan, and Tilon; nowhere else mentioned:

and the sons of Ishi: who it may be was the brother of Shimon or Tilon: were

Zoheth, and Benzoheth; of whom we know no more than their names.

Jehudijah--"the Jewess," to distinguish her from his other wife, who was an Egyptian. This passage records a very interesting fact--the marriage of an Egyptian princess to a descendant of Caleb. The marriage must have taken place in the wilderness. The barriers of a different national language and national religion kept the Hebrews separate from the Egyptians; but they did not wholly prevent intimacies, and even occasional intermarriages between private individuals of the two nations. Before such unions, however, could be sanctioned, the Egyptian party must have renounced idolatry, and this daughter of Pharaoh, as appears from her name, had become a convert to the worship of the God of Israel.