Those to whom We gave the Scripture know him as they know (2:146)

﴿الَّذِينَ آتَيْنَاهُمُ الْكِتَابَ يَعْرِفُونَهُ كَمَا يَعْرِفُونَ أَبْنَاءَهُمْ ۖ وَإِنَّ فَرِيقًا مِّنْهُمْ لَيَكْتُمُونَ الْحَقَّ وَهُمْ يَعْلَمُونَ﴾
[ البقرة: 146]

2:146 Those to whom We gave the Scripture know him as they know their own sons. But indeed, a party of them conceal the truth while they know [it].

The scholars of the Jews and the Christians to whom Allah gave the scripture recognise Muhammad ( peace be upon him ) as completely as they recognise their own children and distinguish them from others.
Nevertheless, a group of them hide the truth that has come to them, out of envy, fully aware that it is the truth.

Those to whom We gave the Scripture (Jews and Christians) recognise him (Muhammad SAW or the Ka'bah at Makkah) as they recongise their sons. But verily, a party of them conceal the truth while they know it - [i.e. the qualities of Muhammad SAW which are written in the Taurat (Torah) and the Injeel (Gospel)].

phonetic Transliteration

Allatheena ataynahumu alkitaba yaAArifoonahu kama yaAArifoona abnaahum wainna fareeqan minhum layaktumoona alhaqqa wahum yaAAlamoona

Abdullah Yusuf Ali - Translation

The people of the Book know this as they know their own sons; but some of them conceal the truth which they themselves know.

Safi-ur-Rahman al-Mubarakpuri

Those to whom We gave the Scripture (Jews and Christians) recognise him (Muhammad or the Ka`bah at Makkah) as they recognize their sons. But verily, a party of them conceal the truth while they know it ـ [i.e., the qualities of Muhammad which are written in the Tawrah and the Injil.

Page 23 English transliteration