Even though that's my post, I've gotta admit it's not quite right.
Here's a better description of the Hymn, from the absolutely divine fflyrics.

The actual hymn is

Ieyui
Nobomeno
Renmiri
Yojuyogo
Hasatekanae
Kutamae

This is slightly different from what's in ShivaBlizzard8's post. It isn't "nobomenu" on the second line

And when you decipher the whole puzzle, what you get is

Pray, Yevon-ju
Dream, Child of Prayer
For ever and ever
Bring us glory