One who has discovered the truth by the help of God has to face stiff opposition when he starts to communicate it to others. One reason is that acceptance of truth entails negation of the self. People of high social status always find this hard, and none more so than the People of the Book, who considered prophethood to be their exclusive right. Unable to conceive of a prophet coming amongst people other than them, they tried various ploys to turn people away from the Arab prophet. One of the theological objections that they raised to his teachings was on the subject of abrogation. Some of the Quranic injunctions differ from Mosaic law, so they would say, ‘Does God make mistakes in His revelations, that He sends down one commandment, and then replaces it with another? This shows that what your Prophet Muhammad is teaching is not from God, but is his own creation.’ So intensive had this propaganda campaign become that even some simple-minded Muslims were affected, and started raising the issue with the Prophet.