Carl Friedrich Keil and Franz Delitzsch Old Testament Commentary
And they (the Danites) had taken what Micah had made, i.e., his idols and his priest, and they fell upon Laish (על כּוא, to come over a person, to fall upon him, as in Gen 34:25), a people living quietly and free from care (vid., Jdg 18:7), smote them with the edge of the sword (see at Gen 34:26), and burned down the city (cf. Jos 6:24), as it had no deliverer in its isolated condition (Jdg 18:28; cf. Jdg 18:7). It was situated "in the valley which stretches to Beth-rehob." This valley is the upper part of the Huleh lowland, through which the central source of the Jordan (Leddan) flows, and by which Laish-Dan, the present Tell el Kadi, stood (see at Jos 19:47). Beth-rehob is most probably the same place as the Rehob mentioned in Num 13:21, and the Beth-rehob of Sa2 10:6, which is there used to designate a part of Syria, and for which Rehob only is also used in Jdg 18:8. Robinson (Bibl. Res. pp. 371ff.) supposes it to be the castle of Hunin or Honin, on the south-west of Tell el Kadi; but this is hardly correct (see the remarks on Num 13:21, Pent. p. 709). The city, which lay in ashes, was afterwards rebuilt by the Danites, and called Dan, from the name of the founder of their tribe; and the ruins are still to be seen, as already affirmed, on the southern slope of the Tell el Kadi (see Rob. Bibl. Res. pp. 391-2, and the comm. on Jos 19:47).
John Gill Bible Commentary
And they took the things which Micah had made,.... The ephod, teraphim, and the two images, the Danites took them, or having taken them kept them, and went on with them:
and the priest which he had; him also they took, and who was willing enough to go with them:
and came unto Laish, unto a people that were quiet and secure; having no sentinels placed at any distance to give them warning of an enemy, nor any watchmen on their walls to discover one; and perhaps their gates not shut, nor any guard at any of their passes and avenues, having no apprehension at all of being visited by an enemy, especially from Israel, not being apprized that they had any pretensions to their city, and the land about it:
and they smote them with the edge of the sword; entered their city, and fell on them suddenly, and cut them to pieces:
and burnt the city with fire; to strike terror to all about; or it may be only they set fire to some part of it, as they entered, only to frighten the inhabitants, and throw them into the greater confusion, that they might become a more easy prey to them; for their intention was to inhabit it, and it seems to be the same city still, though they rebuilt it, and called it by another name.
Matthew Henry Bible Commentary
Here is, I. Laish conquered by the Danites. They proceeded on their march, and, because they met with no disaster, perhaps concluded they had not done amiss in robbing Micah. Many justify themselves in their impiety by their prosperity. Observe, 1. What posture they found the people of Laish in, both those of the city and those of the country about. They were quiet and secure, not jealous of the five spies that had been among them to search out the land, nor had they any intelligence of the approach of this enemy, which made them a very easy prey to this little handful of men that came upon them, Jdg 18:27. Note, Many are brought to destruction by their security. Satan gets advantage against us when we are careless and off our watch. Happy therefore is the man that feareth always. 2. What a complete victory they obtained over them: They put all the people to the sword, and burnt down so much of the city as they thought fit to rebuild (Jdg 18:27, Jdg 18:28), and, for aught that appears, herein they met with no resistance; for the measure of the iniquity of the Canaanites was full, that of the Danites was but beginning to fill. 3. How the conquerors settled themselves in their room, Jdg 18:28, Jdg 18:29. They built the city, or much of it, anew (the old buildings having gone to decay), and called the name of it Dan, to be a witness for them that, though separated so far off from their brethren, they were nevertheless Danites by birth, which might hereafter, by reason of their distance, be called in question. We should feel concerned not to lose the privilege of our relation to God's Israel, and therefore should take all occasions to own it and preserve the remembrance of it to ours after us.
II. Idolatry immediately set up there. God had graciously performed his promise, in putting them in possession of that which fell to their lot, obliging them thereby to be faithful to him who had been so to them. They inherited the labour of the people, that they might observe his statues, Psa 105:44, Psa 105:45. But the first thing they do after they are settled is to break his statues. As soon as they began to settle themselves they set up the graven image (Jdg 18:30), perversely attributing their success to that idol which, if God had not been infinitely patient, would have been their ruin. Thus a prosperous idolater goes on to offend, imputing this his power unto his god, Hab 1:11. Their Levite, who officiated as priest, is at length named here - Jonathan, the son of Gershom, the son of Manasseh. The word Manasseh, in the original, has the letter n, set over the head, which, some of the Jewish rabbin say, is an intimation that it should be left out, and then Manasseh will be Moses, and this Levite, they say, was grandson to the famous Moses, who indeed had a son named Gershom; but, say they, the historian, in honour of Moses, by a half interposition of that letter, turned the name into Manasseh. The vulgar Latin reads it Moses. And if indeed Moses had a grandson that was rakish, and was picked up as a fit tool to be made use of in the setting up of idolatry, it is not the only instance (would to God it were!) of the unhappy degenerating of the posterity of great and good men. Children's children are not always the crown of old men. But the learned bishop Patrick takes this to be an idle conceit of the rabbin, and supposes this Jonathan to be of some other family of the Levites. How long these corruptions continued we are told in the close. 1. That the posterity of this Jonathan continued to act as priests to this family of Dan that was seated at Laish, and in the country about, till the captivity, Jdg 18:30. After Micah's image was removed this family retained the character of priests, and had respect paid them as such by that city, and it is very probable that Jeroboam had an eye to them when he set up one of his calves there (which they could welcome at Can, and put some reputation upon, when the priests of the Lord would have nothing to do with them), and that this family officiated as some of his priests. 2. That these images continued till Samuel's time, for so long the ark of God was at Shiloh; and it is probable that in him time effectual care was taken to suppress and abolish this idolatry. See how dangerous it is to admit an infection, for spiritual distempers are not so soon cured as caught.