I don’t believe it is possible to be Free of Will while practicing any Right Hand Path religion, you cannot worship a deity and not be absolved into it and influenced, therefore your Will is restricted. I’m not quite certain the Father of Lies is the Abrahamic devil . . . it seems to me that would be the actual Abrahamic god who does the majority of fibbing in the Testaments.
Magus III° Ordo Luciferi