Surah Al-Qasas, Verse 52

ٱلَّذِينَ ءَاتَيۡنَٰهُمُ ٱلۡكِتَٰبَ مِن قَبۡلِهِۦ هُم بِهِۦ يُؤۡمِنُونَ٥٢

alladhīna ātaynāhumu l-kitāba min qablihi hum bihi yu'minūna

Those to whom We gave the Scripture before it - they are believers in it.