5. cockatrice--probably the basilisk serpent, cerastes. Instead
of crushing evil in the egg, they foster it.
spider's web--This refers not to the spider's web being made to
entrap, but to its thinness, as contrasted with substantial
"garments," as
Isa 59:6
shows. Their works are vain and transitory
(Job 8:14;
Pr 11:18).
eateth . . . their eggs--he who partakes in their plans, or
has anything to do with them, finds them pestiferous.
that which is crushed--The egg, when it is broken, breaketh out as
a viper; their plans, however specious in their undeveloped form like
the egg, when developed, are found pernicious. Though the viper is
viviparous (from which "vi-per" is derived), yet during gestation, the
young are included in eggs, which break at the birth
[BOCHART]; however,
metaphors often combine things without representing everything to the
life.
JFB.
Picture Study Bible