If thou prepare
kuwn (koon)
to be erect (i.e. stand perpendicular); hence (causatively) to set up, in a great variety of applications
thine heart
leb (labe)
the heart; also used (figuratively) very widely for the feelings, the will and even the intellect
and stretch
paras (paw-ras')
to break apart, disperse, etc. -- break, chop in pieces, lay open, scatter, spread (abroad, forth, selves, out), stretch (forth, out).
out thine hands
kaph (kaf)
the hollow hand or palm (so of the paw of an animal, of the sole, and even of the bowl of a dish or sling, the handle of a bolt, the leaves of a palm-tree); figuratively, power
toward him