Zeus was born by the Titans Cronus and Rhea. Cronus was notorious for being a very jealous and greedy deity. Out of the fear one of his children could take his throne, Cronus swallowed every child Rhea was giving birth to.
However, when Rhea gave birth to her last child, Zeus, she managed to trick Cronus with the help of the Titans Uranus and Gaea. She gave her husband a rock in swaddling clothes to swallow, as a substitution to her child, and sent Zeus away to the Greek island of Crete. Special daemons named "Curetes" made noise by hitting their shields, so that Cronus would to not hear the cries of the baby.
Zeus was raised secretly by the Nymphs and was fed with honey and milk from the goat nurse Amaltheia with the help of her broken-off horn.
Soon came the day where Zeus was mature enough to claim the Kingdom of the World and he started a battle against his father and the Titans. This battle is also known as "Titanomachy". First, Zeus managed to liberate his elder brothers and sisters from his father's stomach by giving him a special herb and making him disgorge.
Then, with the help of his siblings, Zeus overthrew the Titans in the depths of the Underworld, the Tartarus.
After overthrowing his father Cronus, Zeus was confronted with the Giants and also the monster Typhon, which he both defeated successfully. Time had come for the Kingdom of the World to be in the hands of Zeus and his siblings!
Justly, Zeus drew lots with his brothers Poseidon and Hades to let luck determine who would become the new King of the Gods. Zeus won the draw and he officially became the ruler of the Earth and the Sky and the Lord of Mount Olympus, the highest mountain of Greece.
A fable by Aesop