The Spider - 29:47 This is the Book We have sent down to you. Those to whom We have given the Book will believe in it, and some of them will believe. None rejects Our Verses except the unbelievers.
The message of the Qur'an was the content of the previous books, so those who have been given the Book know that the Qur'an is the Word of Allah:
The Table Spread/5:82 "Among mankind you will find the Jews and the polytheists the worst enemies of the believers. And closest in love to the believers are those who say: "We are Christians". For among them are priests and monks who are not arrogant."
The Table Spread/5:83 "When they hear what has come down to the Messenger, you see their eyes overflowing with tears because they recognize the truth. They say, "Our Lord, we believe; count us among the witnesses."

The Stories/28:52 Those to whom We gave the previous Books believe in it.
The Stories/28:53 "When it is recited to them, they say: "We believe in it. This is the truth from our Lord. We were Muslims before that"."

The Prophets/21:24 "Have they taken gods besides Him? Say, "Bring your proof. This is the message of my contemporaries and the message of those before me."But most of them turn away because they do not know the truth."

The Star/53:56 This is a warner from the warners of old.

The Poets/26:196 It has also been mentioned in the previous Books.

The Most High/87:18 This is recorded in the early pages/teachings.

The Cow/2:144 We see you turning your face towards the sky. We will turn you to a Qiblah that you will like. So turn your face to the Holy Mosque. Turn your faces in that direction wherever you are. Surely those to whom the Book has been given know that this is a truth from their Lord. Allah is not heedless of what they do.
The Cow/2:146 Those to whom We have given the Book recognize these truths as they recognize their children, yet a group of them knowingly conceal the truth.

The Cattle/6:20 Those to whom We gave the Book recognize it as they recognize their children. It is the unbelievers who have lost their character.
The Cattle/6:114 Shall I seek a lawgiver besides Allah, Who has sent down to you the Book in detail? Those to whom We have given the Book know that it has been sent down from your Lord. So do not be of those who doubt.

The Heights/7:157 Indeed, they follow (when the time comes) that messenger whom they find written in the Torah and the Gospel with them, the Messenger of Allah, the Messenger of the Ummim (who has not read the Torah and the Gospel), who enjoins upon them good and forbids them from evil, who makes lawful for them good things and forbids for them unclean things, who removes from them the weights and the fetters that weigh them down. Those who believe in him and respect him and help him and follow the light sent down with him are the successful ones.

The Thunder/13:36 "Those to whom We have given the Book rejoice at what has been sent down to you. Some groups disbelieve in part of it. Say: "I am commanded to serve Allah and to associate no partners with Him, to Him I call and to Him is my return."
The Thunder/13:43 "Those who disbelieve say, "You are not a messenger!"Say, "Allah and those who have the knowledge of the Book are sufficient as witnesses between me and you."

The Night Journey/17:107 "Say: "Believe in it or not!"When it is recited to those who have been given knowledge before, they fall on their faces in prostration"
The Night Journey/17:108 "Great is our Lord. The Word of our Lord has come true,"they say"

The Spider/29:47 This is the Book We have sent down to you. Those to whom We have given the Book will believe in it, and some of them will believe. None rejects Our Verses except the unbelievers.

The Ranks/61:6 "Remember when Jesus said to his people: "O Children of Israel, I am a messenger of Allah sent to you, confirming the Torah before me and giving good tidings of a messenger to come after me whose name is more praised."Then when he showed them clear proofs, they said, "This is a clear magic."