The Blood Wraiths do view the Emperor as a God, but do not venerate him in the same manner as the Ecclesiarchy. Instead their beliefs are more in line with the Ordo Opscurus, believing that not just the Emperor but his sons, to Include the Angel have their true manifestations being held in the Warp. Like the Ordo Opscurus whom they have made a secret pact with, they seek knowledge for the resurrection of the physical God Emperor. Hoping that upon his return he will resurrect the Angel and end the flaw of his geen-seed in the process. This is how the Chapter will finally escape their curses.