Many of the great faith narratives (the Holy Quran being a notable exception) are clumsy, rough-hewn things; makepiece amalgams of different texts from an abundance of sources that have been gradually hacked together over hundreds — sometimes even thousands — of years. Most have been found useful or resonant (spiritually and politically) at various stages in history, and some have been purposefully engineered (by individuals or institutions with agendas — their motives pure or otherwise).