The Family Of Imran - 3:89
Except those who turn after that and rectify their situation. Allah is Forgiving, Merciful.
The people of the Book who conceal or change what Allah has revealed in the Book will be forgiven if they repent and correct their behavior:
The Cow/2:159
Those who conceal the clear proofs and guidance which We have sent down - after We have made it public in the Book - are cursed by Allah and all those who curse.
The Cow/2:160
Except those who turn and correct themselves and explain (the Book); I accept their repentance. I am the Accepter of repentance, the Most Merciful.