Thou shalt seek them, and shalt not find them, even them that contended with thee: they that war against thee shall be as nothing, and as a thing of nought.
Thou shalt seek them, and shalt not find them - said of one so utterly put out of the way that not a trace of him can be found (Psalms 37:36).
They shall be ... as a thing of nought - they shall utterly perish.