Apostles
Later in the Gospel narratives the twelve apostles are described as having been commissioned to preach the Gospel to "all the nations", regardless of whether Jew or Gentile. Paul emphasized the important role of the apostles in the church of God when he said that the household of God is "built upon the foundation of apostles and prophets, Christ Jesus himself being the cornerstone".
Although not one of the apostles commissioned during the life of Jesus, Paul, a Jew named Saul of Tarsus, claimed a special commission from the risen Jesus and is considered "the apostle of the Gentiles", for his missions to spread the gospel message after his conversion. In his writings, the epistles to Christian churches throughout the Levant, Paul did not restrict the term "apostle" to the Twelve, and often refers to his mentor Barnabas as an apostle. The restricted usage appears in the Revelation to John.
Judaism's views on Muhammad
In Judaism, prophets were seen as having attained the highest degree of holiness, scholarship, and closeness to God and set the standards for human perfection. The Talmud reports that there were more than a million prophets, but most of the prophets conveyed messages that were intended solely for their own generation and were not reported in Scripture. The Talmud reports that there were prophets among the gentiles (most notably Balaam, whose story is told in "Numbers" 22, and Job, who is considered a non-Jew by most rabbinical opinions). The prophet Jonah was sent on a mission to speak to the gentiles of the city of Nineveh.