Greeks associated Zeus with justice and well being. He's believed to have greatly punished the wicked and maldoers and rewarded all that did good.
He received the lightening bolt from the Cyclops who were the giants that helped Zeus in the war against his father. He uses the lightening bolt for defence along with a bright golden shield with an eagle engraved in it.
Zeus was the son of the great god Cronus and great goddess Rhea. Cronus feared his children would want to overpower him and take his place at Mt.Olympus, therefore he swallowed all of Zeus's siblings, Zeus hadn't yet been born. When Zeus was born, Rhea hid Zeus on some close by islands before Cronus could swallow him then she wrapped a stone in baby's clothes and gave it to Cronus. Cronus swallowed it believing it was his son. When Zeus reached adulthood he disguised himself and returned and tricked Cronus into drinking a liquid that forced him to vomit up all of his children, who then all gathered together to fight in a war against their father Cronus and the rest of the Titans (the race that Cronus and Rhea belonged to). Cronus was overthrown in the war by Zeus, so Zeus then took his place on Mt. Olympus and became judge and chief ruler of the 12 major gods and goddesses called the Olympians who ruled Mt.Olympus. It was believed that he settled disputes fairly but when he became angry he would throw thunder bolts. On Mt. Olympus he was also in charge of changing the seasons and making the sun come and go, both of which were very important to the other gods, goddesses and Greeks.
Zeus had two(2) brothers. They were the god Hades who ruled the underworld and the god Poseidon who ruled the seas. His sisters were goddesses Hesta, Demeter and Hera.
ZEUS later married his sister Hera who then became the queen of goddesses considering the fact that her husband Zeus was king. In their relationship they had two(2) children who are known as the gods Ares and Hephaestus. Even though being married to Hera Zeus also had many love affairs with other goddesses and mortal women. From these extra relationships on the side, his children include the gods Apollo, Dionysus, Hermes, the goddess Artemis, the heroes Heracles(Latin for Hercules) and Perseus. He also gave birth to goddess Athena who sprang full grown from his forehead. According to myths Zeus and goddess Mnemosyne became parents of the Muses(the 9 goddesses of the arts and sciences) and it is believed that he and goddess Athena were parents of the fates. Zeus fell in love often, therefore resulting in so many children Zeus cannot even name them all. Because of his many relationships his wife queen Hera became very insecure of Zeus and other women/goddesses. Zeus was "anthropomorphic" which comes from two(2) Greek words meaning the shape of man. This meant that Zeus could transform into any animal or human being that he wished to be and he would then go down on earth, and fool the mortal women who would then mate with him.
Zeus foretold the future through omens and oracles. As being the guardian of mortality, Zeus enforced moral among men, for Zeus himself was very wise!
Since Zeus's childhood was spent undercover hiding he was never able to experience the joy of being a child. When he was older he was constantly fighting wars and helping and protecting the others, along with doing many other great things though greatly did his job consist of leisurely activities. He is a very special and wise god who later died, but while he was alive he was greatly respected by most and played a major role in Greek mythology and the roles of the other gods and goddesses and the Greek people!