Quran Al-Hajj(The Pilgrimage) 22:54 (enen2tfstfs2)The Coran is true (4) Those gifted with knowledge would know that this revelation is the truth
And so those who were given knowledge may know that it is the truth from your Lord and [therefore] believe in it, and their hearts humbly submit to it. And indeed is Allah the Guide of those who have believed to a straight path. - Quran Al-Hajj(The Pilgrimage) 22:54 (islam)
For them are good tidings in the worldly life and in the Hereafter. No change is there in the words of Allah. That is what is the great attainment. - Quran Yunus(Jonah) 10:64 (islam)
And recite, [O Muhammad], what has been revealed to you of the Book of your Lord. There is no changer of His words, and never will you find in other than Him a refuge. - Quran Al-Kahf(The Cave) 18:27 (islam)