Where does the phrase Herculean strength come from?

The phrase "Herculean strength" originates from the mythology of Hercules, a hero in ancient Greek and Roman culture known for his incredible physical power and feats of strength. Hercules, or Heracles in Greek mythology, completed the Twelve Labors, which included tasks that required immense strength and bravery. As a result, the term "Herculean" has come to describe anything that requires great effort or strength, often used metaphorically to denote extraordinary challenges.