The Companies - 39:39 "Say, "O my people, do what you know, and I will do it, and you will know in the future."
The hypocrites of the People of the Book used to mislead the believers by attempting to change the way of Allah:
The Hypocrites/63:1 "When the hypocrites come to you, they say, "We bear witness that you are the messenger of Allah. Allah knows that you are His messenger, and Allah testifies that the hypocrites lie."
The Hypocrites/63:2 They take their oaths as a shield and lead astray from the way of Allah. How evil is what they do.
The Hypocrites/63:3 Because they disbelieved after they believed, so their hearts were sealed; they do not understand.

The Women/4:51 "Do you not see those who have been given a share of the Book? They believe in idolatry and false doctrines, and say of those who disbelieve, "These are more rightly guided than those who believe"."
The Women/4:60 Do you not see those who claim to believe in you and in what has been sent down to you and in what has been sent down before you, but they want to follow the laws of the unjust and despotic, while they were commanded to disbelieve in it, but Satan wants to lead them astray.

The Family Of Imran/3:70 People of the Book! Why do you deny the Verses of Allah while you are witnesses?
The Family Of Imran/3:71 People of the Book! Why do you confuse right and wrong and knowingly conceal the truth?
The Family Of Imran/3:72 "A group of the people of the Book said: "Believe in what has been sent down to the believers at the beginning of the day and disbelieve at the end. So that perhaps they may turn away from their religion."

The Cow/2:135 "They said: "Become Jews or Christians so that you may be guided". Say: "No, we follow the monotheistic religion of Abraham. He was not of those who associate partners."
The Cow/2:140 "Do you claim that Abraham, Ishmael, Isaac, Jacob and their descendants were Jews or Christians? Say: "Do you know better or Allah? Who is more unjust than he who conceals what Allah has revealed? Allah is not heedless of what you do."

The Family Of Imran/3:65 O people of the Book, why do you dispute about Abraham, when the Injeel and the Torah were sent down after him? Do you not use your intellect?
The Family Of Imran/3:66 You argue about matters about which you have knowledge! But how can you argue about something about which you have no knowledge? You may not know, but Allah knows.
The Family Of Imran/3:67 Abraham was neither a Jew nor a Christian; he was a monotheistic Muslim. He was never of those who associate partners.
The Family Of Imran/3:68 The closest of mankind to Abraham are those who follow him, this prophet and those who believe. Allah is the sovereign and the friend of the believers.
The Family Of Imran/3:69 A group of the people of the Book want to lead you astray. They only mislead themselves. They do not even realize it.
The Family Of Imran/3:78 "Some of them try to make what is not in the Book resemble the Book by twisting their tongues so that you may think that what is not in the Book is in the Book, and they say, "This is from Allah"when it is not from Allah. They knowingly lie in the name of Allah."
The Family Of Imran/3:100 Believers! If you follow some of the people of the Book, they will turn you back to disbelief after you have believed.
The Family Of Imran/3:101 How can you disbelieve when the verses of Allah are recited to you and His messenger is among you? Whoever clings to Allah is guided to the straight path.

The Women/4:44 Do you not see that those who have been given a share of the Book have bought error and wish that you should go astray?