Whose arrows
chets  (khayts)
a piercer, i.e. an arrow; by implication, a wound; figuratively, (of God) thunder-bolt; the shaft of a spear
are sharp
shanan  (shaw-nan')
to point (transitive or intransitive); intensively, to pierce; figuratively, to inculcate -- prick, sharp(-en), teach diligently, whet.
and all their bows
qesheth  (keh'-sheth)
of bending: a bow, for shooting (hence, figuratively, strength) or the iris -- arch(-er), + arrow, bow(-man, -shot).
darak  (daw-rak')
to tread; by implication, to walk; also to string a bow (by treading on it in bending) -- archer, bend, come, draw, go (over), guide, lead (forth), thresh, tread (down), walk.
their horses'
cuwc  (soos)
from an unused root meaning to skip (properly, for joy); a horse (as leaping); also a swallow (from its rapid flight) -- crane, horse(-back, -hoof).
parcah  (par-saw')
a claw or split hoof -- claw, (cloven-)footed, hoof.
shall be counted
chashab  (khaw-shab')
to plait or interpenetrate, i.e. (literally) to weave or (gen.) to fabricate; figuratively, to plot or contrive (usually in a malicious sense); hence (from the mental effort) to think, regard, value, compute
like flint
tsar  (tsar)
adversary, afflicted(-tion), anguish, close, distress, enemy, flint, foe, narrow, small, sorrow, strait, tribulation, trouble.
and their wheels
galgal  (gal-gal')
a wheel; by analogy, a whirlwind; also dust (as whirled) -- heaven, rolling thing, wheel.
like a whirlwind
cuwphah  (soo-faw')
a hurricane -- Red Sea, storm, tempest, whirlwind, Red sea.