I will rule forever. That is my wish, and so it shall be.
One day, one of your own children will take away your power. That is the way of the universe.
After Gaia told Cronus this, he decided that he would eat all of his children after they were born. After Rhea gave birth to Zeus, she decided that she needed to hide him in Crete. She fooled Cronus by giving him a rock.
After Zeus grew up, he returned to his father to avenge his siblings...
NO! My brothers and sisters will fight you in war.
I demand you to throw up my siblings!
Cronus threw up his children, and they helped Zeus defeat the titans. They overthrew Cronus and Zeus became the God of Gods.