Koran 6:155 This too is a blessed scripture that we have revealed; you shall
follow it and lead a righteous life, that you may attain mercy. 156 So you can
no longer say, "The scripture was sent down to two groups before us, and we
were unaware of their teachings." 157 Nor can you say, "If only a scripture
could come down to us, we would be better guided than they." A proven
scripture has now come to you from your Lord, and a beacon, and a mercy.
Now, who is more evil than one who rejects these proofs from God, and
disregards them? We will commit those who disregard our proofs to the worst
retribution for their heedlessness.
Koran 36:6 To warn people whose parents were never warned, and
therefore, they are unaware.
Koran 32:3 They said, "He fabricated it." Indeed, this is the truth from your Lord, to warn people who never received a warner before you, that they may be guided. Koran 5:15 O people of the scripture, our messenger has come to you to proclaim for you many things you have concealed in the scripture, and to pardon many other transgressions you have committed. A beacon has come to you from God, and a profound scripture.
Koran 5:19 O people of the scripture, our messenger has come to you, to explain things to you, after a period of time without messengers, lest you say, "We did not receive any preacher or warner." A preacher and warner has now come to you. GOD is Omnipotent.