The Light in Frodo's Face

[piosenniel]

"Still that must be expected," said Gandalf to himself. "He is not half through yet, and to what he will come in the end not even Elrond can foretell. Not to evil, I think. He may become like a glass filled with a clear light for eyes to see that can."

Frodo seems the embodiment of the gift that Galadriel gave to hime - the glass phial with the light of earendil in it - the light of innate goodness shining in the shadow of darkness and evil to light the way for others.