"You understand the rules of my forest, the rules …,
further, you are aware of all the things 'So ordered (by Enlil).'
I should have carried you up, and killed you at the very entrance to the branches of the forest.
I should have fed your flesh to the screeching vulture, the eagle, and the vulture.
So now, Enkidu, clemency is up to you.
Speak to Gilgamesh to spare (my) life!" (5.168-173)
Here, Humbaba is begging Enkidu for rescue by reminding him of what he knows: that Humbaba was appointed as the guardian of the Cedar Forest by Enlil, the king of the gods. Enkidu doesn't want to tick off the king of the gods, does he? Well, you wouldn't think so—but, as it turns out, Enkidu does instruct Gilgamesh to kill Humbaba, does tick off the gods (and Enlil specifically), and does end up getting struck down by a mortal illness (after some other mishaps along the way). Not too wise, Enkidu. Not wise at all.
"An idiot and a moron should give advice to each other,
but you, Gilgamesh, why have you come to me?
Give advice, Enkidu, you 'son of a fish,' who does not even know his own father,
to the large and small turtles who do not suck their mother's milk!
…
… Gilgamesh, throat and neck,
I would feed your flesh to the screeching vulture, the eagle, and the vulture!" (5.75-85)
It looks like even fierce monsters have feelings of pride. At least, that's one interpretation of this trash-talk Humbaba dishes out to Gilgamesh and Enkidu before doing battle with them in the Cedar Forest. But isn't it much more likely that insulting these two warriors' pride will make them all the more spoiling for a fight?
Quote 3
"May he not live the longer of the two,
may Enkidu not have any 'shore'(?) more than his friend Gilgamesh!"
Enkidu spoke to Gilgamesh, saying:
"My friend, I have been talking to you but you have not been listening to me,
You have been listening to the curse of Humbaba!" (5.280-284)
The first two lines of this passage come from Humbaba's curses against Enkidu, when he realizes that he can't persuade Enkidu to save his life. The fact that Humbaba can't change Enkidu's mind shows Enkidu's perseverance—or, you know, stubbornness. But Enkidu is afraid that his friend Gilgamesh doesn't have as much perseverance as he does—and calls him out on it.