Raguel, called also Reuel, Exodus 2:18, who seems to be the same who is called Jethro, Exodus 3:1, it being usual in Scripture for one person to have two or three names. And therefore this Hobab is not Jethro, but his son, which may seem more probable, because Jethro was old and unfit for travel, and desirous, as may well be thought, to die in his own country, whither he returned, Exodus 18:27; but Hobab was young and fitter for these journeys, and therefore entreated by Moses to stay and bear them company. Moses's father-in-law; which words are ambiguous, but seem to belong to Raguel, or Reuel, not to Hobab, though others are of another mind.
Related Commentaries of Numbers 10:29
Numbers 10:29
29 And Moses said unto Hobab, the son of Raguel the Midianite, Moses' father in law, We are journeying unto the place of which the LORD said, I will give it you: come thou with us, and we will do thee good: for the LORD hath spoken good concerning Israel.