Who said "My oath is binding unto death and beyond."?

This quote is attributed to Legolas.

My oath is binding unto death and beyond. - Legolas

"My oath is binding unto death and beyond."

Legolas

"A Elven blade of the First Age, still sharp and true."

"The world is vast, and there is much beauty to behold if one takes time to see it."

"In friendship, we find our greatest treasure."

"Do not despair, for hope endures even in the darkest places."