See the introduction to the Book of Judges. The only point of contact with the preceding history of Samson is, that we are still concerned with the tribe of Daniel. See Judges 18:1-2, note. Josephus combines in one narrative what we read here and in Judges 1:34, and places it, with the story in Judg. 18-21, immediately after the death of Joshua.

And there was a man of Mount Ephraim - It is extremely difficult to fix the chronology of this and the following transactions. Some think them to be here in their natural order; others, that they happened in the time of Joshua, or immediately after the ancients who outlived Joshua. All that can be said with certainty is this, that they happened when there was no king in Israel; i.e., about the time of the Judges, or in some time of the anarchy, Judges 17:6.

And there (a) was a man of mount Ephraim, whose name [was] Micah.
(a) Some think this history was in the time of Othniel, or as Josephus writes, immediately after Joshua.

And there was a man of Mount Ephraim,.... This and the four following chapters contain an history of facts, which were done not after the death of Samson, as some have thought, and as they may seem at first sight, by the order in which they are laid; but long before his time, and indeed before any of the judges in Israel, when there was no king, judge, or supreme governor among them, as appears from Judges 17:6 even between the death of Joshua and the elders, and the first judge of Israel, Othniel; and so Josephus (e) places them in his history, and the connection of them is with Judges 2:10 and so accounts for the rise of idolatry in Israel, how it got into the tribe of Daniel, and spread itself over all the tribes of Israel, Judges 2:11 which brought on their servitude to Cushanrishathaim, in which time the Jewish chronology (f) places those events; but they were certainly before that, for the idolatry they fell into was the cause of it; yet could not be so early as the times of Joshua, and before his death; because in his days, and the days of the elders, Israel served the Lord; the reasons why they are postponed to the end of this book, and the account of them given here, are, according to Dr. Lightfoot (g), that the reader observing how their state policy failed in the death of Samson, who was a Danite, might presently be showed God's justice in it, because their religion had first failed among the Danites; that when he observes that 1100 pieces of silver were given by every Philistine prince for the ruin of Samson, Judges 16:5 he might presently observe the 1100 pieces of silver that were given by Micah's mother for the making of an idol, which ruined religion in Samson's tribe; that the story of Micah, of the hill country of Ephraim, the first destroyer of religion, and the story of Samuel, of the hill country of Ephraim, the first reformer of religion, might be laid together somewhat near. That the facts after related were so early done as has been observed, appears from the following things; the priest of the idol Micah made was a grandson of Moses, Judges 18:30, the Danites' seeking to enlarge their possessions, related in the same chapter, was most probably as soon as they were driven into the mountains by the Amorites, Judges 1:34. Mahanah Daniel, from whence they marched, and had its name from their expedition, Judges 18:12 is mentioned before in the history of Samson, Judges 13:25 and therefore the expedition must be before his time. Phinehas, the son of Eleazar, was alive at the battle of Gibeah, Judges 20:28 and Deborah speaks of the 40,000 Israelites slain by Benjamin at it, Judges 5:8. This man with whom the idolatry began was of the tribe of Ephraim, and dwelt in the mountainous part of it:
whose name was Micah; in the original it is Micajehu, with part of the name Jehovah affixed to it, as Dr. Lightfoot (h) remarks, till he set up his image, and thenceforward was called Micah; but, according to Abarbinel, the former was his name while he was a child, and in his youth, and with his mother, being a diminutive term, and when he became a man be was called Micah, Judges 17:5.
(e) Antiqu. l. 5. c. 2. sect. 8, &c. (f) Seder Olam Rabba, c. 12. p. 33. (g) Works, vol. 1. p. 46. (h) Works, vol. 1. p. 45.

What is related in this, and the rest of the chapters to the end of this book, was done soon after the death of Joshua: see chap. Judges 20:28. That it might appear how happy the nation was under the Judges, here is showed how unhappy they were when there was no Judge. The love of money made Micah so undutiful to his mother as to rob her, and made her so unkind to her son, as to curse him. Outward losses drive good people to their prayers, but bad people to their curses. This woman's silver was her god, before it was made into a graven or a molten image. Micah and his mother agreed to turn their money into a god, and set up idol worship in their family. See the cause of this corruption. Every man did that which was right in his own eyes, and then they soon did that which was evil in the sight of the Lord.

MICAH RESTORING THE STOLEN MONEY TO HIS MOTHER, SHE MAKES IMAGES. (Judges 17:1-4)
a man of mount Ephraim--that is, the mountainous parts of Ephraim. This and the other narratives that follow form a miscellaneous collection, or appendix to the Book of Judges. It belongs to a period when the Hebrew nation was in a greatly disordered and corrupt state. This episode of Micah is connected with Judges 1:34. It relates to his foundation of a small sanctuary of his own--a miniature representation of the Shiloh tabernacle--which he stocked with images modelled probably in imitation of the ark and cherubim. Micah and his mother were sincere in their intention to honor God. But their faith was blended with a sad amount of ignorance and delusion. The divisive course they pursued, as well as the will-worship they practised, subjected the perpetrators to the penalty of death.

There was, &c. - The things mentioned here, and in the following chapters, did not happen in the order in which they are put; but much sooner, even presently after the death of the elders that over - lived Joshua, as appears, because Phinehas the son of Eleazar was priest at this time, Judges 20:28, who must have been about 350 years old, if this had been done after Samson's death.