13] But because of their breach of their Covenant, We cursed them, and made their hearts grow hard: they change the words from their (right) places and forget a good part of the Message that was sent them, nor wilt thou cease to find them - barring a few - ever bent on (new) deceits: but forgive them, and overlook (their misdeeds): for Allah loveth those who are kind. (Al-Maidah The Quran)
14. From those, too, who call themselves Christians, We did take a covenant, but they forgot a good part of the message that was sent them: so we estranged them, with enmity and hatred between the one and the other, to the day of judgment. And soon will Allah show them what it is they have done. (The Quran 005.14)
15. O people of the Book! There hath come to you our Messenger, revealing to you much that ye used to hide in the Book, and passing over much (that is now unnecessary). There hath come to you from Allah a (new) light and a perspicuous Book,- (The Quran 005.15)
17. In blasphemy indeed are those that say that Allah is Christ the son of Mary. Say: "Who then hath the least power against Allah, if His will were to destroy Christ the son of Mary, his mother, and all every - one that is on the earth? For to Allah belongeth the dominion of the heavens and the earth, and all that is between. He createth what He pleaseth. For Allah hath power over all things." (The Quran 005.17)
41. O Messenger. let not those grieve thee, who race each other into unbelief: (whether it be) among those who say "We believe" with their lips but whose hearts have no faith; or it be among the Jews,- men who will listen to any lie,- will listen even to others who have never so much as come to thee. They change the words from their (right) times and places: they say, "If ye are given this, take it, but if not, beware!" If any one's trial is intended by Allah, thou hast no authority in the least for him against Allah. For such - it is not Allah.s will to purify their hearts. For them there is disgrace in this world, and in the Hereafter a heavy punishment. (The Qur'an 005.41)