The Acknowledgment of Objective Christian Scholars
It is wise to support calling Christians to Islam with testimonies of objective Christian scholars who were guided by Allah to the religion, or at least to acknowledge that it is the truth. This is to be considered as Allah The Almighty Says (what means): {And a witness from her family testified.} [Quran 12:26]
Following are few relevant examples:
1 - An-Najaashi (Negus), may Allah have mercy upon and be pleased with him.
When Ja‘far ibn Abi Taalib, may Allah be pleased with him, read some verses from the beginning of Soorah Maryam to An-Najaashi (As’hamah, the King of Abyssinia), the latter cried until his beard became soaked with his tears. His bishops also cried when they heard the Quran recited to them. He said to the delegate, “What does your Companion say about the Son of Mary?” Ja‘far, may Allah be pleased with him, said, “He says what Allah says in such a way that he is the Spirit and the word whom Allah brought out from the Virgin Mary, who was never touched by a man.” The Negus picked up a stick, raised it, and said: “You, the congregation of priests and monks, what he [i.e. the Prophet ] says about the son of Mary does not differ even as little as this [stick] weighs from what you say about him.” Then he addressed the Muslim delegate, saying, “You and the one [i.e. the Prophet ] from whence you came are welcome. I testify that there is none worthy of worship except Allah and that He is the Messenger of Allah, of whose emergence ‘Eesa (Jesus), may Allah exalt his mention, gave glad tidings. Were it not for my kingdom, I would go to him to kiss his shoes.”
2 - Salmaan Al-Faarisi, may Allah be pleased with him.
The story of Salmaan, may Allah be pleased with him, is a wonderful one. He lived with a group of Christian scholars. When the last priest in Amouria, with whom Salmaan had been associating, was near death, he advised Salmaan, may Allah be pleased with him, saying, “This is the time when a prophet is going to be sent from Makkah and his emigration will be to a land that is located between two mountains and has palm trees. He has two evident marks: the seal of prophethood between his shoulders, and he accepts gifts but never consumes charity. If you can go to him in that land, go ahead, for he is about to emerge.”
Salmaan, may Allah be pleased with him, traveled and found the marks that were described for him and he embraced Islam. .
3 - Heraclius, the Roman King
Concluding his conversation with Abu Sufyaan, may Allah be pleased with him, Heraclius said,
I asked you whether he has ever betrayed. You replied in the negative, and likewise, Messengers never betray. Then I asked you what he ordered you to do. You replied that he ordered you to worship Allah without associating anything with Him and forbade you from worshipping idols, and ordered you to pray, speak the truth and be chaste. If what you have said is true, then he will very soon occupy this place underneath my feet. I have known it it [from the scriptures] that he was going to appear but I did not think that he would be from you. If I could reach him, I would go immediately to meet him, and if I were with him, I would certainly wash his feet. [Al-Bukhari and Muslim]
Then Heraclius said to the Romans: “O Romans! If you desire success, seek right guidance, and if want your empire to remain, then give the pledge of allegiance to this Prophet [i.e. embrace Islam].”[Al-Bukhari]
However, he preferred to keep his kingdom and did not accept Islam.
Based on the abovementioned narrations, it is now clear that upright and objective People of the Book testified to the authenticity of the mission of the Prophet, , and of him as being the true prophet. Hence, it would not harm if others were to belie him.
Many other Christian scholars embraced Islam and testified that Muhammad, , is the Messenger whom Allah sent to all people. Allah The Almighty Says (what means): {That is because among them are priests and monks and because they are not arrogant.} [Quran 5:82]
Hence, all Christians should unhesitatingly follow their objective scholars and submit themselves to Allah, the Lord of worlds.