Thou hast asked concerning the fundamentals of religion and its ordinances: Know thou that first and foremost in religion is the knowledge of God. This attaineth its consummation in the recognition of His divine unity, which in turn reacheth its fulfilment in acclaiming that His hallowed and exalted Sanctuary, the Seat of His transcendent majesty, is sanctified from all attributes. And know thou that in this world of being the knowledge of God can never be attained save through the knowledge of Him Who is the Dayspring of divine Reality.

Dalá'Il-I-Sab'ih