Why did Heracles have to perform the labors?

Heracles was tasked with performing the Twelve Labors as a form of penance after he was driven mad by Hera, resulting in him killing his wife and children. To atone for this tragic act, the Oracle of Delphi advised him to serve King Eurystheus and complete a series of seemingly impossible tasks. The labors were meant to prove his strength and valor, ultimately leading to his redemption and immortality.