what does the bible say?
Multiple New Testament verses connect "Jesus of Nazareth" with the Jewish Messiah prophesied in the Old Testament. For example, John 1:45 reveals, "Philip found Nathanael and said to him, 'We have found him of whom Moses in the Law and also the prophets wrote, Jesus of Nazareth, the son of Joseph.'" (See also Matthew 26:71; Mark 10:47; 16:6; Luke 4:34; John 19:19).
Jesus was born in Bethlehem to Jewish parents and was raised mostly in Nazareth, a Jewish town in Galilee. Jesus was a common name. Adding "of Nazareth" clarified which Jesus people had in mind.
The phrase Jesus of Nazareth also emphasizes the humble background of Jesus. Nazareth was considered a lowly, despised town in Galilee. This explains the reaction of Nathanael in John 1:46, "Can anything good come out of Nazareth?"