isaiah 59:5 They hatch cockatrice' eggs, and weave the spider's web: he that eateth of their eggs dieth, and that which is crushed breaketh out into a viper. - Free Bible Online

      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.