Among the people is he who opposes God publicly. If the verses of God are recited to him, his face grows dark and he returns to his people as one despised. And among them is he who claimed that they were not revealed through (my) innate nature (fitra). Say: By God! Innate nature was created by a single letter of those verses and what streams from my holy and wondrous pen bears witness to that. And among them is he who slandered against God and said that this is nothing but a magician bewitching people. What passed his lips destroyed his deeds. He denied the prophets and the messengers and rebelled against the religion of God.
Baha’u’llah, Lawh al-Tuqa (Tablet of Piety), soon after his break with his brother Mirza Yahya in Edirne. See Lambden for additional background and an alternative translation. For original, Athar-i Qalam-i A`la, 7:349.