The New John Gill Exposition of the Entire BibleJeremiah 7:29
Cut off thine hair, O Jerusalem, and cast it away…
supplement is made, because the word is feminine; and therefore cannot
be directed to the prophet, but to Jerusalem, and its inhabitants;
shaving the head is a sign of mourning, (Job 1:20) and this is enjoined,
to show that there would soon be a reason for it; wherefore it follows:
and take up a lamentation on high places:
that it might be heard afar
off; or because of the idolatry frequently committed in high places.
The Targum is,
``pluck off the hair for thy great ones that are carried
captive, and take up a lamentation for the princes:''
for the Lord hath rejected and forsaken the generation of his wrath;
generation of men, deserving of the wrath of God, and appointed to it,
on whom he determined to pour it out; of which his rejection and
forsaking of them was a token: this was remarkably true of that
generation in which Christ and his apostles lived, who disbelieved the
Messiah, and had no faith in him, and spoke lying and blasphemous words
concerning him; and therefore were rejected and forsaken by the Lord;
and wrath came upon them to the uttermost.