The Cow - 2:130
None turns away from the religion of Abraham except the one who deceives himself. We chose him in this world, and in the Hereafter he will be among the righteous.
Whoever turns away from the religion of Abraham:
The Family Of Imran/3:85
Whoever seeks a religion other than Islam (submission to God), it will not be accepted from him, and he will be of the losers in the Hereafter.
The Family Of Imran/3:19
The only religion approved by Allah is Submission (Islam). Those who were given the Book, after the knowledge had come to them, differed only because of jealousy among themselves. Allah is swift in reckoning for those who deny the signs of Allah.