themes in the epic of gilgamesh

Often in literature, authors use a friendship between characters to reveal the theme or some truth about human nature. Friendship furthers the action and the plot. In The Epic of Gilgamesh, from Sumerian literature, Enkidu and Gilgamesh's friendship is the catalyst for the entire epic which reveals the theme "There is no permanence."
To begin, the friendship between Gilgamesh and Enkidu is like brotherhood. From the time Gilgamesh and Enkidu meet to the point where Enkidu dies, the two friends spend all their time together. They share all their journeys like defeating Humbaba. They also back each other up as in the instance where Enkidu aids Gilgamesh in conquering the bull of heaven when he didn't agree with it. Also, the...