Surah Al-Ma'idah, ayah 14

وَمِنَ ٱلَّذِينَ قَالُوٓاْ إِنَّا نَصَٰرَىٰٓ أَخَذۡنَا مِيثَٰقَهُمۡ فَنَسُواْ حَظّٗا مِّمَّا ذُكِّرُواْ بِهِۦ فَأَغۡرَيۡنَا بَيۡنَهُمُ ٱلۡعَدَاوَةَ وَٱلۡبَغۡضَآءَ إِلَىٰ يَوۡمِ ٱلۡقِيَٰمَةِۚ وَسَوۡفَ يُنَبِّئُهُمُ ٱللَّهُ بِمَا كَانُواْ يَصۡنَعُونَ ١٤

Waminal-ladhīna qālū innā nasārā akhadhnā mīthāqahum fanasū hazzam mimmā dhukkirū bihī fa aghraynā baynahumul-'adāwata wal-baghdā'a ilā yawmil-qiyāmati wasawfa yunabbi'uhumullāhu bimā kānū yasna'ūn

And from those who say, "We are Christians" We took their covenant; but they forgot a portion of that of which they were reminded.²⁴⁹ So We caused among them²⁵⁰ animosity and hatred until the Day of Resurrection. And Allāh is going to inform them about what they used to do.