Final answer:
The ex-Jewish rabbi in question would most likely have expressed admiration for the Holy Prophet Muhammad, recognizing shared beliefs in monotheism while also noting differences in doctrines regarding figures such as Jesus. The Prophet's character and his role as a final messenger would be respected in the context of the Abrahamic traditions.
Step-by-step explanation:
According to Islamic teachings, the ex-Jewish rabbi would likely have praised or admired the Holy Prophet Muhammad for his teachings and moral character. The Holy Prophet is seen as the last prophet in a line that includes other monotheistic figures such as Moses and Jesus. He preached the message of the one true God, similar to the foundations of Judaism and Christianity, and called for the rejection of idolatry and adherence to monotheism, mirroring beliefs already present within Judaism.
The Qur'an speaks respectfully of Jews and Christians as 'the People of the Book,' acknowledging the shared spiritual heritage. It includes narratives on biblical personalities, while also reflecting a clear distinction in beliefs, especially regarding Jesus's status as a prophet rather than divine.
During his lifetime, the Holy Prophet faced significant challenges in Mecca due to his monotheistic preaching, which threatened the polytheistic traditions and economic interests of the area, but his steadfast character and revelations attracted followers who admired his message and dedication to God's instruction.