In English grammar, Thou, Thee, Thine etc are singular. When addressing more than one person You and Yours are used. See more
Hear me, O Lord, of light everlasting. I, Jonathan Corbis, pertition thee thy voice on Earth. O Master of the World, hear me. I pertition thee.
[the organ begins to play
Hail, O Prince of the Abyss, in thy name, let us behold... the father, the ram of the sun, the moon, the stars. Hail, O deathless one.