Summary of Sunni concepts
The People of the Book denying the Qur’an is denying their books
God Almighty addressed the People of the Book by saying:
And believe in what you have revealed, confirming what is with you, and do not be the first to disbelieve in it
So his statement confirms what you have
It is useful if you do not believe in him
This has caused you to deny what you have
Because what he brought of monotheism and belief
It is the one brought by Moses, Jesus, and other prophets
Your denial of it is a denial of what you have
Also, in your books there is the description of the Prophet, may God bless him and grant him peace, and the glad tidings of him
And your denial of the Prophet, may God bless him and grant him peace
A denial of some of what is in your books
Whoever denies some of what was revealed to him has denied all of it
God Almighty said
Do you believe in part of the Scripture and disbelieve in part?
The reward for those of you who do that is nothing but disgrace in this worldly life
On the Day of Resurrection, they will be returned to the most severe torment
And God is not unaware of what you do