لَّٰكِنِ ٱللَّهُ يَشۡهَدُ بِمَآ أَنزَلَ إِلَيۡكَۖ أَنزَلَهُۥ بِعِلۡمِهِۦۖ وَٱلۡمَلَٰٓئِكَةُ يَشۡهَدُونَۚ وَكَفَىٰ بِٱللَّهِ شَهِيدًا ١٦٦
But Allāh bears witness to that which He has revealed to you. He has sent it down with His knowledge, and the angels bear witness [as well]. And sufficient is Allāh as Witness.
Translation: Saheeh International (English)
Each word's meaning and sound
If the Jews disbelieve in you O Messenger, then Allah bears testimony to the truth of the Qur’ān that He has revealed to you, He has revealed knowledge of His to His servants so that they may know what He willed regarding what He likes and is pleased with, as well as what He dislikes and condemns. Together with Allah’s testimony, the angels also bear testimony to the truth of what you brought. Allah’s testimony is sufficient and no one else’s testimony is required.
Al-Mukhtasar in interpreting the Noble Quran