Jeremiah 7:29

Cut off thine hair, O Jerusalem, and cast it away, and take up a lamentation on high places; for the LORD hath rejected and forsaken the generation of his wrath.

Cut off thine hair. Jeremiah addresses "Jerusalem" under the figure of a woman, who, in grief for her lost children, deprives her head of its chief ornament, and goes up to the hills to weep (as Jephthah's daughter did, Judges 11:37-7; Isaiah 15:2, "He is gone up to the high places to weep").

Hair, [ nizreek (H5145)] - flowing locks, like those of a Nazarite (Numbers 6:19). The Nazarites were one of Jerusalem's glories. Hence, they are mentioned, after the prophecy here had been actually fulfilled, among the subjects of Jerusalem's bitterest regrets. "Her Nazarites were purer than snow," etc., Lamentations 4:7.

High places - the scene of her idolatries is to be the scene of her mourning (Jeremiah 3:21).

Generation of his wrath - the generation with which He is wroth. So Isaiah 10:6, "the people of my wrath." Generation of his wrath - the generation with which He is wroth. So Isaiah 10:6, "the people of my wrath."