Does anyone know what the singers mean when they say, "Veni Veni, venias/ Ne me mori facias/ Haryuu no/ hanekata"? I know the english version of the lyrics, but I want to know what it has to do with Sephiroth.

it means "Mommy, mom, hold me. My black heart bleeds so. Why can't the world be fair to an outcast like myself?"

oh, so that's what it really means when they say, "Come, come, o come/ Do not let me die/ The winged one/ of the lower reaches?".