This incident may very well be allowed to have happened as it is placed here, before the giving of the law, and not, as some place it, in connection with what is recorded, Num 10:11, Num 10:29, etc. Sacrifices were offered before; in these mentioned here (Exo 18:12) it is observable that Jethro is said to take them, not Aaron. And as to Jethro's advising Moses to constitute judges under him, though it is intimate (Exo 18:13) that the occasion of his giving that advice was on the morrow, yet it does not follow but that Moses's settlement of that affair might be some time after, when the law was given, as it is placed, Deu 1:9. It is plain that Jethro himself would not have him make this alteration in the government till he had received instructions from God about it (Exo 18:23), which he did not till some time after. Jethro comes,

I.To congratulate the happiness of Israel, and particularly the honour of Moses his son-in-law; and now Jethro thinks himself well paid for all the kindness he had shown to Moses in his distress, and his daughter better matched than he could have expected. Jethro could not but hear what all the country rang of, the glorious appearances of God for his people Israel (Exo 18:1); and he comes to enquire, and inform himself more fully thereof (see Psa 111:2), and to rejoice with them as one that had a true respect both for them and for their God. Though he, as a Midianite, was not to share with them in the promised land, yet he shared with them in the joy of their deliverance. We may thus make the comforts of others our own, by taking pleasure, as God does, in the prosperity of the righteous.

II.To bring Moses's wife and children to him. It seems, he had sent them back, probably from the inn where his wife's aversion to the circumcision of her son had like to have cost him his life (Exo 4:25); fearing lest they should prove a further hindrance, he sent them home to his father-in-law. He foresaw what discouragements he was likely to meet with in the court of Pharaoh, and therefore would not take any with him in his own family. He was of that tribe that said to his father, I have not known him, when service was to be done for God, Deu 33:9. Thus Christ's disciples, when they were to go upon an expedition not much unlike that of Moses, were to forsake wife and children, Mat 19:29. But though there might be reason for the separation that was between Moses and his wife for a time, yet they must come together again, as soon as ever they could with any convenience. It is the law of the relation. You husbands, dwell with your wives, Pe1 3:7. Jethro, we may suppose, was glad of his daughter's company, and fond of her children, yet he would not keep her from her husband, nor them from their father, Exo 18:5, Exo 18:6. Moses must have his family with him, that while he ruled the church of God he might set a good example of prudence in family-government, Ti1 3:5. Moses had now a great deal both of honour and care put upon him, and it was fit that his wife should be with him to share with him in both. Notice is taken of the significant names of his two sons. 1. The eldest was called Gershom (Exo 18:3), a stranger, Moses designing thereby, not only a memorial of his own condition, but a memorandum to his son of his condition also: for we are all strangers upon earth, as all our fathers were. Moses had a great uncle almost of the same name, Gershon, a stranger; for though he was born in Canaan (Gen 46:11), yet even there the patriarchs confessed themselves strangers. 2. The other he called Eliezer (Exo 18:4), My God a help, as we translate it; it looks back to his deliverance from Pharaoh, when he made his escape, after the slaying of the Egyptian; but, if this was (as some think) the son that was circumcised at the inn as he was going, I would rather translate it so as to look forward, which the original will bear, The Lord is my help, and will deliver me from the sword of Pharaoh, which he had reason to expect would be drawn against him when he was going to fetch Israel out of bondage. Note, When we are undertaking any difficult service for God and our generation, it is good for us to encourage ourselves in God as our help: he that has delivered does and will deliver.

After he had sent her back - Why Zipporah and her two sons returned to Midian, is not certainly known. From the transaction recorded Exo 4:20, Exo 4:24, it seems as if she had been alarmed at the danger to which the life of one of her sons had been exposed, and fearing worse evils, left her husband and returned to her father. It is however possible that Moses, foreseeing the troubles to which his wife and children were likely to be exposed had he taken them down to Egypt, sent them back to his father-in-law till it should please God to deliver his people.

Jethro, now finding that God had delivered them, and totally discomfited the Egyptians, their enemies, thought it proper to bring Zipporah and her sons to Moses, while he was in the vicinity of Horeb.

Then Jethro, Moses's father-in-law, took Zipporah, Moses's wife,.... When he had heard of the above things, he determined to pay Moses a visit, and congratulate him on that account; and he took his daughter, the wife of Moses, along with him, to deliver her to her husband, to share with him in his cares and troubles; as to partake with him of his honours and dignity, so to bear part with him in his burdens, so far as she was capable of:

after he had sent her back: upon his call and mission to Egypt, he took his wife and children with him; but upon an affair which occurred in the inn by the way, he sent them back again to his father-in-law, where they had remained ever since, see Exo 4:24. Jarchi says this was done at meeting with Aaron his brother, Exo 4:27, and relates a conversation between them upon it. As that Aaron should say to him, who are these? to which he replied, this is my wife, I married her in Midian, and these are my sons: he further said to him, and where art thou carrying them? he replied, to Egypt; says he, by reason of those who are before there, we are in straits, and thou wilt add unto them; upon which he said to his wife, go back to thy father's house, and she took her sons and went thither. Kimchi (f) observes, that some render the words "after her gifts"; whose sense, according to Aben Ezra, is, after she had sent gifts to her husband; but others more probably interpret it of gifts sent by him to her to engage his father-in-law to let her come to him, as well as to prevail upon her to come; perhaps it may be better rendered, "after her messenger"; that is, either after the messenger sent to her by Moses, to acquaint her and her father of what had been done for him, or after the messenger she sent to him, to let him know that she intended shortly to be with him; though perhaps, after all, nearer to our version and others, it may be rendered, "after her dismissions" (g); the dismission or sending away of her and her sons, as before related; for this is by no means to be interpreted of a divorce of her; after which she was brought again to her husband; for there is no reason to believe that ever anything of that kind had passed, as some have thought (h): the plain case seems to be this, that Moses finding his family would be exposed to danger, or would be too great an incumbrance upon him in the discharge of his great work he had to do in Egypt, sent them back to his father-in-law until a fit opportunity should offer of their coming to him, as now did.

(f) Sepher Shorash. rad. "post dona vel donationes ejus"; so some in Vatablus and Drusius. (g) "post dimissiones ejus", Pagninus, Montanus, Drusius. (h) Vid. Selden. Uxor. Hebr. p. 629.