وَمَا تَفَرَّقَ ٱلَّذِينَ أُوتُواْ ٱلۡكِتَٰبَ إِلَّا مِنۢ بَعۡدِ مَا جَآءَتۡهُمُ ٱلۡبَيِّنَةُ ٤
Nor did those who were given the Scripture become divided1 until after there had come to them clear evidence.
Translation: Saheeh International (English)
1 Into sects and denominations.
Each word's meaning and sound
The Jews who were given the Torah and the Christians who were given the Gospel, did not disagree except after Allah sent His Prophet to them. There were some who became Muslims, and others who persisted in their disbelief despite knowing of the truth of their Prophet.
Al-Mukhtasar in interpreting the Noble Quran