The Epic of Gilgamesh explores the friendship between Gilgamesh and Enkidu. Enkidu is created to curb Gilgamesh's tyrannical behavior as king. They become friends after fighting and defeating the monster Humbaba together. Later, they kill the Bull of Heaven, but Enkidu falls ill and dies as divine punishment. Gilgamesh is devastated by the loss of his friend and realizes the importance of friendship in life through their adventures together and Enkidu's death.