So shall we come upon him in some place where he shall be found,.... For such a numerous army, which would be spread abroad, could not well fail of finding him out, let him be in what lurking place he would; whereas he might lie concealed, and escape so small a number as twelve thousand men:
and we will light upon him as the dew falleth upon the ground; whose drops are innumerable, and cover all the ground where they fall; and the phrase not only expresses their numbers, but the irresistible force they should come with, and the manner, secretly, unawares, opportunely; the Romans had a sort of soldiers, called from the dew "rorarii", who carried light armour, and fought first in the battle, from whence they had their name, because dew falls before it rains n:
and of him, and of all the men that [are] with him, there shall not be left so much as one; so that for the future Absalom would sit easy upon the throne, there being none left to molest him.
n Valtrinus de Milit. Roman. l. 3. c. 3.