Nahum 3:15-17

Verse 15

Make thyself many as the cankerworm - On the locusts, and their operations in their various states, see the notes on Joel 2 (note). The multitudes, successive swarms, and devastation occasioned by locusts, is one of the most expressive similes that could be used to point out the successive armies and all-destroying influences of the enemies of Nineveh. The account of these destroyers from Dr. Shaw, inserted Joel 2, will fully illustrate the verses where allusion is made to locusts.
Verse 16

Thou hast multiplied thy merchants - Like Tyre, this city was a famous resort for merchants; but the multitudes which were there previously to the siege, like the locusts, took the alarm, and fled away.
Verse 17

Thy crowned are as the locusts - Thou hast numerous princes and numerous commanders.

Which camp in the hedges in the cold day - The locusts are said to lie in shelter about the hedges of fertile spots when the weather is cold or during the night; but as soon as the sun shines out and is hot, they come out to their forage, or take to their wings.
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