Hubris is a term for excessive pride and arrogance. Traditionally, this is the sort of insolence which leads a person to violate the moral code of the gods, and even to challenge them directly. Capaneus
is a classical example of hubris. He was supposedly an enormous, strong man with great wealth and power. In some literature, there's a story that he temporarily saved himself from death by clinging to a protruding rock on a cliff during a raging storm. Still hanging high over the waters, he proceeded to taunt Zeus with his skill and fortune. Upon the moment of his boasting, the rock suddenly broke off, and he fell to his death.
Proverbs 16:18 - "Pride goes before destruction, a haughty spirit before a fall."