Onsider the excerpt and theme from Gilgamesh: A New English Version.

Enkidu said, "Don't worry, my friend,
the dream you had is a favorable one.
The eagle that you saw, with a lion's head,
stands for Humbaba. Though it dived straight toward you
and terrifying flames shot from its mouth,
nothing could cause you harm. The young man
who came to your rescue was our lord, Shamash.
He will stand beside us when the monster attacks.
Whatever happens, we will prevail."
Gilgamesh, happy with his good dream,
smiled, and his face lit up with pleasure.

Theme One: Dreams have valuable meanings.