Know thou of a certainty that the Unseen can in no wise incarnate His Essence and reveal it unto men. He is, and hath ever been, immensely exalted beyond all that can either be recounted or perceived. From His retreat of glory His voice is ever proclaiming: "Verily, I am God; there is none other God besides Me, the All-Knowing, the All-Wise. I have manifested Myself unto men, and have sent down Him Who is the Day Spring of the signs of My Revelation. Through Him I have caused all creation to testify that there is none other God except Him, the Incomparable, the All-Informed, the All-Wise." He Who is everlastingly hidden from the eyes of men can never be known except through His Manifestation, and His Manifestation can adduce no greater proof of the truth of His Mission than the proof of His own Person. (Baha'u'llah, ‘Gleanings from the Writings of Baha'u'llah’)