Why did Jason have to find the golden fleece?

Answer 1

Jason was the son of Aeson, the King of Thessaly. Aeson's half-brother, Pelias, overthrew him and slew all of Aeson's children and family. Jason only survived because his mother Alcimede, made it appear that Jason was still born. Jason was taken to Chiron the centaur to be educated. Meanwhile, Pelias, ever fearful of being cast down by a rightful ruler, as most usurpers are, consulted an oracle who bade him to beware a man wearing one sandal.

Many years later, Jason traveled to Iolcus to confront Pelias, and on the way lost a sandal in the river Anauros while helping an old woman cross. The old woman was Hera in disguise and she blessed Jason for his efforts. Once in the city, Pelias recognized Jason as the man from the prophecy and put forth as task that he hoped Jason would never return from: to retrieve the Golden Fleece from Colchis.

Answer 2

Pelias, King of Lolcus, suggested Jason should get it to honor their dead relative Phrixius.

Answer 3

To get the throne of Iolcus, a city in Thessaly.

Answer 4

A king sent him to find it.