Religious divisions and sectarianism

وَمَا تَفَرَّقَ ٱلَّذِينَ أُوتُوا۟ ٱلْكِتَـٰبَ إِلَّا مِنۢ بَعْدِ مَا جَآءَتْهُمُ ٱلْبَيِّنَةُ

Nor did those who were given the Scripture become divided until after there had come to them clear evidence.