وَإِذْ أَخَذَ ٱللَّهُ مِيثَٰقَ ٱلنَّبِيِّۦنَ لَمَآ ءَاتَيْتُكُم مِّن كِتَٰبٍۢ وَحِكْمَةٍۢ ثُمَّ جَآءَكُمْ رَسُولٌۭ مُّصَدِّقٌۭ لِّمَا مَعَكُمْ لَتُؤْمِنُنَّ بِهِۦ وَلَتَنصُرُنَّهُۥ ۚ قَالَ ءَأَقْرَرْتُمْ وَأَخَذْتُمْ عَلَىٰ ذَٰلِكُمْ إِصْرِى ۖ قَالُوٓا۟ أَقْرَرْنَا ۚ قَالَ فَٱشْهَدُوا۟ وَأَنَا۠ مَعَكُم مِّنَ ٱلشَّٰهِدِينَ
And [recall, O People of the Scripture], when Allah took the covenant of the prophets, [saying], "Whatever I give you of the Scripture and wisdom and then there comes to you a messenger confirming what is with you, you [must] believe in him and support him." [Allah] said, "Have you acknowledged and taken upon that My commitment?" They said, "We have acknowledged it." He said, "Then bear witness, and I am with you among the witnesses."
Discovering God is to find an eternal reality. It is to become a co-traveller or a travelling companion of the whole universe. Those who find God in this way, can rise above all kinds of prejudices. They recognize truth in all situations, whether the call of truth comes through an ‘Israelite prophet’ or an ‘Ishmaelite prophet’. But those who lead their lives on the level of community-oriented thinking can recognize the truth only when it comes to them from a member of their own community. If God selects as His messenger someone from outside their community, then the message he brings does not lodge in their minds, not even when their own hearts bear witness to the veracity of that message. Even if such ‘believers’ regard themselves as true believers, they will find their names deleted from the list of believers in the Hereafter. This is because they recognized the truth only in relation to their community rather than in relation to God. Not acknowledging a message of truth, which has been testified to by their own hearts, is the worst crime in the eyes of God. Such people will be condemned in the Hereafter and all creatures will join in this condemnation.