Take thee a sharp knife - Among the Israelites, and indeed among most ancient nations, there were very few edge-tools. The sword was the chief; and this was used as a knife, a razor, etc., according to its different length and sharpness. It is likely that only one kind of instrument is here intended; a knife or short sword, to be employed as a razor.
Here is a new emblem produced, in order to mark out the coming evils.
1. A third part is to be burnt in the midst of the city, to show that so many should perish by famine and pestilence during the siege.
2. Another third part he was to cut in small portions about the city, (that figure which he had pourtrayed upon the brick), to signify those who should perish in different sorties, and in defending the walls.
3. And the remaining third part he was to scatter in the wind, to point out those who should be driven into captivity. And,
4. The sword following them was intended to show that their lives should be at the will of their captors, and that many of them should perish by the sword in their dispersions.
5. The few hairs which he was to take in his skirts, 2 Samuel 10:3, was intended to represent those few Jews that should be left in the land under Gedaliah, after the taking of the city.
6. The throwing a part of these last into the fire, 2 Samuel 10:4, was intended to show the miseries that these suffered in Judea, in Egypt, and finally in their being also carried away into Babylon on the conquest of Egypt by Nebuchadnezzar. See these transactions particularly pointed out in the notes on Jeremiah, chapters 40, 41, 42. Some think that this prophecy may refer to the persecution of the Jews by Antiochus Epiphanes.
Translate it: take thee a sharp sword, for a barber‘s razor thou shalt take it thee. Even if the action were literal, the use of an actual sword would best enforce the symbolic meaning. The “head” represents the chief city, the “hair” the inhabitants - its ornament and glory - the “hair cut from the head” the exiles cast forth from their homes. It adds to the force of the representation that “to shave the head” was a token of mourning Job 1:20, and was forbidden to the priests Leviticus 21:5. Thus, in many ways, this action of Ezekiel “the priest” is significant of calamity and ruin. The sword indicates the avenging power; the shaving of the head the removal of grace and glory; the scales and weights the determination of divine justice. Compare Zechariah 13:8-9.