﴿ وَقَالُوا۟ لَن يَدْخُلَ ٱلْجَنَّةَ إِلَّا مَن كَانَ هُودًا أَوْ نَصَٰرَىٰ ۗ تِلْكَ أَمَانِيُّهُمْ ۗ قُلْ هَاتُوا۟ بُرْهَٰنَكُمْ إِن كُنتُمْ صَٰدِقِينَ ﴾

“AND THEY claim, "None shall ever enter paradise unless he be a Jew" - or, "a Christian". Such are their wishful beliefs! Say: "Produce an evidence for what you are claiming, if what you say is true!"”

Please check ayah 2:113 for complete tafsir.