Yes, 3:14-4:00 is beautiful.
The final "Sephiroth!" part I like.
The music sets you up for it.
Anyway, I thought I should mention that the second melody of the interlude -- the four-note one -- is found in Domine Jesu Christe of Mozart's Requiem. The only difference is in which notes are emphasized.
Safer Sephiroth is a seraph, an angel of the highest order, and he has a halo and an ornament that kind of looks like a sun. And Jesus, of course, is the Son of God in Christianity. I wonder if it this was intentional of Uematsu.
