إِنَّكَ لَا تَهْدِى مَنْ أَحْبَبْتَ وَلَـٰكِنَّ ٱللَّهَ يَهْدِى مَن يَشَآءُ ۚ وَهُوَ أَعْلَمُ بِٱلْمُهْتَدِينَ

There are two types of acceptance of any proposition. One is by virtue of it being the Truth. The other by reason of it being current in one’s own circle. It is those who accept the Truth for the sake of Truth who are guided by God: it was people of this kind who placed their faith in the Quran and the Prophet in the earlier period of Islam. A number of Christians and Jews embraced the faith as soon as they heard the Quran. These were such as had been steadfast in their acceptance of the true teachings of previous prophets. They had, therefore, quickly recognised the last of the Prophets, just as they had recognised the previous prophets. But, in order to maintain their ability to do so, they had to go through various stages of ‘patience.’ They kept their minds free of those influences which render a man incapable of recognising the Truth, these being historical and social factors which create that frame of mind which causes a man to change the religion of God into the religion of a group. Man reaches the stage when he is able to recognise only the religion which he inherits from his group. He fails to recognise the religion which comes to him from outside. To keep oneself free of these influences, one has to make great psychological sacrifices. That is why this process has been called ‘patience’. Those who exercise patience will be given a double reward: one because of their sacrifice in not allowing their erstwhile faith to become a group faith, and the other because of their capacity to recognise truth on merit, in the sense that when the new prophet came before them, they recognised him and rallied to his support. It is in those who have the ability to recognise the Truth that high moral qualities develop. They are good even to those who harm them. They help others so that God may help them. They pursue a course of turning away from useless discussions, so that they may not become involved in futile debates.

— Source: Tazkirul Quran (Maulana Wahiduddin Khan) via Quran.com (28:56)