The Scofield Bible Commentary, by Cyrus Ingerson Scofield, , at sacred-texts.com
Now know I
A striking illustration of all apostasy. With his entire departure from the revealed will of God concerning worship and priesthood, there is yet an exaltation of false priesthood. Saying, "Blessed be thou of Jehovah," Micah's mother makes an idol; and Micah expects the blessing of Jehovah because he has linked his idolatry to the ancient levitical order.