Al-Baqarah - 2:146

الَّذِينَ آتَيْنَاهُمُ الْكِتَابَ يَعْرِفُونَهُ كَمَا يَعْرِفُونَ أَبْنَاءهُمْ وَإِنَّ فَرِيقاً مِّنْهُمْ لَيَكْتُمُونَ الْحَقَّ وَهُمْ يَعْلَمُونَ
[2:146]
Those whom We have given the Book recognize him as they recognize their sons, and a party of them most surely conceal the truth while they know (it).
The people of the Book know this as they know their own sons; but some of them conceal the truth which they themselves know.
Those unto whom We gave the Scripture recognise (this revelation) as they recognise their sons. But lo! a party of them knowingly conceal the truth.