Creon is a powerful leader who says that Polyneices is not to be buried. Polyneices is Antigone's brother and she really wants to give him a proper burial, but it goes against the law.
"Polyneices, I say, is to have no burial: no man is to touch him or say the least prayer for him" (39-40).
"But I will bury him; and if I must die, I say that this crime is holy" (55-56)
Antigone is willing to break the law and even die for her late brother in order to give him the respect that he deserves. She values morals higher than laws
"I did not do it. I did not see who did it. You must not punish me for what someone else has done" (68-69).
Someone has gone against Creon's law and buried Polyneices. Now, the community must find out who has done this. We know that the Sentry is innocent and is just trying to follow Creon's commands.
Creon realizes that his laws were too harsh, but it is too late to change anything now because his family members have killed themselves. His morals have now changed after he has come to this realization.
"There is no happiness where there is no wisdom; no wisdom but in submission to the gods" (139-140)