Be astonished
shamem (shaw-mame')
to stun (or intransitively, grow numb), i.e. devastate or (figuratively) stupefy (both usually in a passive sense)
O ye heavens
shamayim (shaw-mah'-yim)
air, astrologer, heaven(-s).
at this and be horribly afraid
sa`ar (saw-ar')
to storm; by implication, to shiver, i.e. fear -- be (horribly) afraid, fear, hurl as a storm, be tempestuous, come like (take away as with) a whirlwind.
be ye very
m`od (meh-ode')
vehemence, i.e. (with or without preposition) vehemently; by implication, wholly, speedily, etc.
desolate
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.
saith
n'um (neh-oom')
an oracle -- (hath) said, saith.
the LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
