Surely thou didst set
shiyth (sheeth)
to place (in a very wide application) -- apply, appoint, array, bring, consider, lay (up), let alone, look, make, mark, put (on), + regard, set, shew, be stayed, take.
them in slippery places
chelqah (khel-kaw')
smoothness; figuratively, flattery; also an allotment -- field, flattering(-ry), ground, parcel, part, piece of land (ground), plat, portion, slippery place, smooth (thing).
thou castedst them down
naphal (naw-fal')
to fall, in a great variety of applications (intransitive or causative, literal or figurative)
into destruction
masshuw'ah (mash-shoo-aw')
ruin -- desolation, destruction.