The LORD
Yhovah (yeh-ho-vaw')
(the) self-Existent or Eternal; Jehovah, Jewish national name of God -- Jehovah, the Lord.
shall make
nathan (naw-than')
to give, used with greatest latitude of application (put, make, etc.)
the rain
matar (maw-tawr')
rain -- rain.
of thy land
'erets (eh'-rets)
the earth (at large, or partitively a land) -- common, country, earth, field, ground, land, natins, way, + wilderness, world.
powder
'abaq (aw-bawk')
light particles (as volatile) -- (small) dust, powder.
and dust
`aphar (aw-fawr')
dust (as powdered or gray); hence, clay, earth, mud -- ashes, dust, earth, ground, morter, powder, rubbish.
from heaven
shamayim (shaw-mah'-yim)
air, astrologer, heaven(-s).
shall it come down
yarad (yaw-rad')
to descend; causatively, to bring down (in all the above applications)
upon thee until thou be destroyed
shamad (shaw-mad')
to desolate -- destory(-uction), bring to nought, overthrow, perish, pluck down, utterly.