Of a truth
'omnam (om-nawm')
verily -- indeed, no doubt, surely, (it is, of a) true(-ly, -th).
LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
the kings
melek (meh'-lek)
a king -- king, royal.
of Assyria
'Ashshuwr (ash-shoor')
Ashshur, the second son of Shem; also his descendants and the country occupied by them (i.e. Assyria), its region and its empire
have destroyed
charab (khaw-rab')
to parch (through drought) i.e. (by analogy,) to desolate, destroy, kill -- decay, (be) desolate, destroy(-er), (be) dry (up), slay, surely, (lay, lie, make) waste.
the nations
gowy (go'-ee)
a foreign nation; hence, a Gentile; also (figuratively) a troop of animals, or a flight of locusts -- Gentile, heathen, nation, people.
and their lands
'erets (eh'-rets)
the earth (at large, or partitively a land) -- common, country, earth, field, ground, land, natins, way, + wilderness, world.