“Thee” and “thou” in “The Lord of the Rings”

[Legate of Amon Lanc]

Originally Posted by Estelyn Telcontar

Good catch, G55! This is indeed an interesting example of the familiar usage. My impression here is that this is the conversation between a god and his follower, which is intimate and highy personal. Tuor's frequent use of "Lord" in this dialogue intensifies that impression. These are no equals conversing casually. Ulmo is clearly revered by Tuor.

I would think about it that way, too. See the same thing above for the praise to Elbereth: it is effectively a prayer. And it is usual for prayer to be intimate, using familiar form, it is a "dialogue with the divine power", only in this case, it is face-to-face, but otherwise the same.