Nyazian Scrolls

It predicted a confluence of events — the Tro-clan — which would bring about the ruination of mankind. It was about a child born to vampires, and at the same time it said that the child would never be born, that there would be no birth:

For surely in that time, when the sky opens and the heavens weep, there will be no birth, only death.

Also, Holtz arrival, Angel's sworn enemy, was foretold in the Scrolls:

Born out of/raised up from darkness to bring darkness.

And, worse of all, it predicted that:

The father will kill the son.

The prophecy, translated by Wesley as well as a translator from Wolfram & Hart, was about Connor, son of vampires Angel and Darla, who wasn't born eventually — he just "appeared" after his mother staked herself and turned into dust. However, it turned out to be that part of the Nyazian Scrolls were false ("The father will kill the son"), planted by Sahjhan, because of a real prophecy that predicted:

The one sired by the vampire with a soul will grow to manhood and kill Sahjhan