Thine 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.
in the heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
of the king's
melek (meh'-lek)
a king -- king, royal.
enemies
'oyeb (o-yabe')
hating; an adversary -- enemy, foe.
whereby the people
`am (am)
a people (as a congregated unit); specifically, a tribe (as those of Israel); hence (collectively) troops or attendants; figuratively, a flock -- folk, men, nation, people.
fall
naphal (naw-fal')
to fall, in a great variety of applications (intransitive or causative, literal or figurative)
under thee