The information is here given that Joseph, the son of Jacob, prophesied concerning the descendants of Lehi, and that these prophecies were recorded on the plates of brass which once were in the custody of Laban. (1 Ne. 3:3.) Joseph may, therefore, properly be called a great prophet.
This is also evident from the accounts of his dreams (Gen. 45:3-14).
To the ordinary reader of the Bible it would perhaps not occur to regard Joseph in Egypt as a prophet, but to the Hebrews anciently one who spoke for God, whether about things present, past or future, was a prophet. Abraham was a prophet (Acts 21:9)
No details are given concerning the visit of Paul and Luke in the home in Caesarea, but as Philip was one of the first seven bishops in Jerusalem (Acts 6:5), it is evident that Luke, the historian, could get much valuable information from him concerning the earliest days of the church, for the book of the Acts he was writing at that time.
The last of the prophets of the Old Dispensation was John the Baptist, the greatest of them all (32.)
Only a Jew, I believe, educated as Nephi was, would have regarded Joseph, the son of Jacob, as a prophet, as Nephi does. Another evidence of the authenticity of the Book of Mormon!