Here is, I. A loud call to weeping and mourning. Jerusalem, that had been a joyous city, the joy of the whole earth, must now take up a lamentation on high places (v. 29), the high places where they had served their idols; there must they now bemoan their misery. In token both of sorrow and slavery, Jerusalem must now cut off her hair and cast it away; the word is peculiar to the hair of the Nazarites, which was the badge and token of their dedication to God, and it is called their crown. Jerusalem had been a city which was a Nazarite to God, but now must cut off her hair, must be profaned, degraded, and separated from God, as she had been separated to him. It is time for those that have lost their holiness to lay aside their joy.