They gaped
patsah (paw-tsaw')
to rend, i.e. open (especially the mouth) -- deliver, gape, open, rid, utter.
upon me with their mouths
peh (peh)
the mouth (as the means of blowing), whether literal or figurative (particularly speech); specifically edge, portion or side; adverbially (with preposition) according to
as a ravening
taraph (taw-raf')
to pluck off or pull to pieces; causatively to supply with food (as in morsels) -- catch, without doubt, feed, ravin, rend in pieces, surely, tear (in pieces).
and a roaring
sha'ag (shaw-ag')
to rumble or moan -- mightily, roar.
lion
'ariy (ar-ee')
a lion -- (young) lion, + pierce (from the margin).