The 12 disciples were the primary figures who introduced and spread the Christian faith after the death and resurrection of Jesus. They were:
1. Simon Peter (also known as Cephas)
2. Andrew (Peter's brother)
3. James (son of Zebedee)
4. John (James' brother)
5. Philip
6. Bartholomew (also known as Nathanael)
7. Thomas
8. Matthew (the tax collector)
9. James (son of Alphaeus)
10. Thaddaeus (also known as Judas son of James or Jude)
11. Simon the Zealot
12. Judas Iscariot (replaced by Matthias after Judas's betrayal and death)
After Jesus's ascension, these men (with the exception of Judas Iscariot) played a crucial role in establishing the early Christian church, preaching the gospel, and performing miracles. Their individual stories and contributions are detailed in the New Testament, particularly in the Gospels and the Book of Acts.