When you focus on and mentally summarize the speaker's message, and work to understand the information presented, you are said to

An active listener.

Explanation:

Be it in a day-to-day interaction or during a speech, a listener can be active or passive. A passive listener is one who is not truly paying attention. He may seem as if he is, though. But there is not real effort to understand the message. An active listener, on the other hand, makes an effort to keep focused on what is being said. He tries to understand the information being presented and uses empathy to connect with the speaker.

the answer should be:

the intervention of the supernatural gives gilgamesh hope that he will defeat humbaba.