When We substitute one revelation for another,- and Allah knows best what He reveals (in stages),- they say, "Thou art but a forger": but most of them understand not. 101 (Muhammad), say, "The Holy Spirit has brought the Quran from your Lord to you in all truth to strengthen the faith of the believers and to be a guide and glad news for the Muslims". 102 Yet We know what they say: "It is only a man who instructs him." The speech of the man they imply is obscure while this is clear Arabic. 103 Those who believe not in the Signs of Allah,- Allah will not guide them, and theirs will be a grievous Penalty. 104 Only they invent falsehood who believe not Allah's revelations, and (only) they are the liars. 105 Whoso disbelieves in God, after he has believed -- excepting him who has been compelled, and his heart is still at rest in his belief -- but whosoever's breast is expanded in unbelief, upon them shall rest anger from God, and there awaits them a mighty chastisement; 106 That is because they preferred the worldly life over the Hereafter and that Allah does not guide the disbelieving people. 107 They are those whose hearts, hearing and sight are sealed by Allah; they are the heedless. 108 So it occurred that they are the losers in the Hereafter. 109 ۞ Then, verily, thy Lord unto those who have emigrated after they had been tempted and have thereafter striven hard and endured, verily thy Lord thereafter is Forgiving, Merciful. 110