Zeus was the dispenser of justice and protector of human rights. If a mortal was acting better than the gods or lacked hospitality towards another god, he or she will be struck with a lightning bolt sent by Zeus.
And finally, Zeus, the king of gods. Jupiter for the Romans, he is the god of thunder. Depicted with a beard and lightnings, he symbolizes power, virility (he was a restless lover and seducer ...), strength and wisdom.