In ancient Roman mythology, Jupiter was the chief of the pantheon of the gods, as well as a protector of the Roman state and a god of the sky. His name is derived from the Greek root word diu, meaning “bright.” Another name, Lucetius, means “light bringer.” His is at times given the title dies pater, meaning “shining father.”

Origins and Family

Jupiter’s origins are a story of deliverance. According to the myth, Jupiter’s father, Saturn, devoured each of his children as soon as they were born, so that they would not grow up to take vengeance upon him and his place as ruler of the gods. Jupiter’s mother, however, was saddened by the loss of her children. So, she hid Jupiter in a cave and swaddled a stone in infant clothing, which she gave to Saturn. He consumed the stone, and Jupiter was safe. Eventually, Jupiter freed his siblings, still alive within their father’s belly. Although chief deity, he shared his power with his brothers and sisters as they ruled over lesser deities and humankind.

Myths and Stories

Jupiter plays a role in many ancient myths. For example, humans or lesser gods often come to Jupiter for justice or assistance. Phaethon is said to have lost control of his father’s chariot pulled by four horses, which carried the sun across the sky. The intense heat of the sun was scorching the earth, causing fires and creating vast deserts. Jupiter answered the prayers of the mortals by destroying the chariot with his lightning bolt and thunder. In another myth, similar to the biblical account of the Noachian flood, Jupiter assumes human form to see if the rumors of man’s wickedness are true. He is appalled by their actions, and punishes them using a great flood.


Jupiter was worshiped on hilltops throughout Italy, the seat of the Roman Empire. Even before Rome came to power as an empire, Jupiter Latiaris was worshiped on the hills south of Rome, then part of a coalition of twelve cities. Oaths were sworn outdoors on the hills, under the oversight of Jupiter. Rome itself was situated on the Capitoline Hill, home to the temple shared as a triad, or trinity, by Jupiter, Minerva, and Juno. There, worship involved a sacred oak tree and the lapides silices, flint stones used ceremonially by the priests who both declared war and signed treaties. These priests also officiated marriage ceremonies.

Like his Greek counterpart, Zeus, Jupiter was associated with the lightning bolt. Jupiter Elicius was often solicited by worshipers to bring rains in seasons of drought, and areas struck by lightning were hemmed in with a circular wall, considered the claimed property of Jupiter Fulgar and not to be profaned. These areas were purified with the sacrifice of an onion, a human hair, and fish.


On September 13, a festival to Jupiter Optimus Maximus, meaning “the best and greatest of all the Jupiters,” was held in Rome. This corresponded to the date when certain Roman leaders had ascended to office and taken a special oath. A white ox, said to be Jupiter’s favorite gift, was sacrificed in thanks of another year of protection. Then, feasting ensued. This festival also corresponded to the time of the Roman games.

Before going to war, priests danced with twelve shields, one of which was said to have fallen from heaven as a sign from Jupiter. The other eleven were made by craftsmen, so that if one was stolen, it would not likely by the original. When the Roman armies returned triumphantly home from battle, great processions wound through the city to the temple of Jupiter. The triumphant general leading the procession was robed as the god himself, riding in a chariot and driving prisoners of war before him.


Centuries after Jupiter had ceased to be worshiped as part of the Roman religion, his influence on popular culture was still evident in the realms of art and literature. The literary term “sub Iove” was used to mean “under the open sky.” His image is common in paintings throughout the Middle Ages and the Renaissance.

Facts about Jupiter

Role in Mythology: Chief of the gods, sky god, protector of Rome, god of oaths and treaties

Alternate Names: Iovis, Iove, Jove, Iuppiter, Diespiter, Calestis, Lucetius, Totans, Fulgurator, Indiges

Family Relationships: Son of Saturn, brother of Neptune and Juno, husband of Juno

Symbols: Lightning bolt and eagle

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