Oedipus in attempt to figure out what is going on calls upon Teiresais, a blind prophet, because of his connections with the god Apollo. Sophocles incorporates this character very carefully, and for one main reason, to further express his corrupt society. To accomplish this Sophocles made the character Teiresais symbolize questionable truth. (Questionable because an old, blind, beggar looking old man is making profits)(Questionable truth also exists in all societies). He also makes Teiresais express and emphasize a major technique of his, blind truth vs. false sight. In this Teiresais is physically blind but knows the truth, directly opposing Teiresais is Oedipus who can physically see but knows no truth. This is subtly thrown in to the play to reveal Sophocles" audience to themselves. Seeing this obvious contrast the audience is therefore forced to subconsciously hint to themselves as being the character Oedipus but in their society. They will also see that by trying to control where control isn't will get them nowhere, like how Oedipus" argument got him nowhere in halting his oracle. This is what Sophocles wanted accomplished, to emphasize why the character Oedipus was presented, and to further express his corrupt society. He did this threw the character Teiresais. .
This leads the audience to Sophocles" second attempt of curing the religious hypocrisy in his society threw his characters. Sophocles sees that in his society the people of religion are turning on each other because of blame. Oedipus after his conflict with Teiresais calls upon Creon, to blame away his augury in the lines, " For Gods sake, tell me what you saw in me, what cowardice or what stupidity, that made you lay a plot like this against me?" (536-538). Sophocles uses what Oedipus does to Creon to make another point about the religious corruption in his society. That directing blame where blame isn't to be rightfully to be had leads to downfall.