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.
Judas Iscariot
The name "Judas" (Ὶούδας) is a Greek rendering of the Hebrew name Judah (יהודה, Yhûdâh, Hebrew for "God is praised"), which was an extremely common name for Jewish men during the first century AD, due to the renowned hero Judas Maccabeus. Consequently, numerous other figures with this name are mentioned throughout the New Testament. In the Gospel of Mark , the earliest of all the gospels, which was written in the mid 60s or early 70s AD, Judas Iscariot is the only apostle named "Judas". follows this portrayal. The Gospel of Luke , however, replaces the apostle whom Mark and Matthew call "Thaddeus" with "Judas son of James". Peter Stanford suggests that this renaming may represent an effort by the author of the Gospel of Luke to create a "good Judas" in contrast to the betrayer Judas Iscariot.