Isaiah--the web of sin: Isaiah 59:5-8

Ottoman Viper, Montivipera xanthina

"None calleth for justice, nor any pleadeth for truth: they trust in vanity, and speak lies; they conceive mischief, and bring forth iniquity. 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. Their webs shall not become garments, neither shall they cover themselves with their works: their works are works of iniquity, and the act of violence is in their hands. Their feet run to evil, and they make haste to shed innocent blood: their thoughts are thoughts of iniquity; wasting and destruction are in their paths.  The way of peace they know not; and there is no judgment in their goings: they have made them crooked paths: whosoever goeth therein shall not know peace."  Isaiah 59:4-8

Spider Web, Jeff Small Wood, Flicker

I'm stopping here because I think the cockatrice's eggs and spider's webs are images pregnant with truth worth stopping for.  There are several good commentary pieces worth sharing too.

cockatrice--adder, viper

Instead of stamping out evil in the egg, the sinful heart hatches it out, and it yields the poison of vipers, Isa_59:5. Ah, the hapless state of the ungodly! Their feet, and their thoughts, and their paths, are fatal to the peace of others and to their own. The way of peace can be entered only at the Cross, and maintained only by constant watchfulness. See Luke 1:79 -F.B. Meyer

 "...and see sin in its consequences, sin exceedingly hurtful, separating us from God, and so separating us not only from all good, but to all evil."  M Henry

 To give light to them that sit in darkness and in the shadow of death, to guide our feet into the way of peace.  -Luke 1:79

They trust in vanity; literally, in chaos; i.e. "in a mass of false and vain statements." The whole basis of the dealings between man and man was unsound, corrupt, chaotic. Where truth and plain dealing are set aside, all shortly becomes ruin and confusion. They conceive mischief, etc. (comp. Psa_7:14). -Pulpit Commentary

 They hatch cockatrice’ eggs. (On the cockatrice, see the comment upon Isa_11:8.) The meaning here is that the people gave themselves to brooding on and hatching purposes which were as pernicious and destructive as the eggs of venomous serpents. And weave the spider’s web; i.e. "their purposes were as flimsy and unsubstantial as the web of the spider." -Pulpit Commentary

Their webs shall not become garments. The unsubstantial fabrics which they weave shall not serve them in any way as garments, or be of any real value or utility. Their devices shall not take objective shape in such sort as to afford them "cover" or protection. Their works are works of iniquity; rather, works of nothingness, works that make a mere pretense of being works at all, and are in reality mere shams, impotent and delusive. And the act of violence is in their hands; rather, and it  is an act of violence that is in their hands. Violence creates nothing. At the best, it destroys. -Pulpit Commentary

 The way of peace they know not. They have no desire for "peace," and neither "seek" it nor "ensue" it (1Pe_3:11). Peace can only be obtained through righteousness (Isa_32:17). There is no judgment in their goings; rather, no justice—no recognition of other men’s rights, no endeavour to observe right in their own acts and proceedings