And they lay wait
'arab (aw-rab')
to lurk -- (lie in) ambush(-ment), lay (lie in) wait.
for their own blood
dam (dawm)
blood (as that which when shed causes death) of man or an animal; by analogy, the juice of the grape; figuratively (especially in the plural) bloodshed (i.e. drops of blood)
they lurk privily
tsaphan (tsaw-fan')
to hide (by covering over); by implication, to hoard or reserve; figuratively to deny; specifically (favorably) to protect, (unfavorably) to lurk
for their own lives
nephesh (neh'-fesh)
a breathing creature, i.e. animal of (abstractly) vitality; used very widely in a literal, accommodated or figurative sense (bodily or mental)