Now, because truthfulness ranks among the highest stations while lying plummets to the lowest depths, the two are separated by clear distinctions, signs, and proofs that reveal the truth of one and the falsity of the other to anyone who reflects on their realities. For this reason the evidences and hallmarks attesting to the prophets’ truthfulness are numerous and varied, and so too are the indications that unmask the falsehood of those who merely claim prophethood—matters that have been set out in detail elsewhere.