What ancient greek belief does this passage most clearly illustrate

Here is the passage!

So he spoke, and balanced the spear far

shadowed, and threw it;

but glorious Hektor kept his eyes on him, and

avoided it,

for he dropped, watchful, to his knee, and the

bronze spear flew over his shoulder

and stuck in the ground, but Pallas Athene

snatched it, and gave it

back to Achilleus, unseen by Hektor shepherd of

the people.

-The Iliad of Homer,

Richard Lattimore

i do not see the passage