Who were the 12 apostles of Jesus and what role did each of them play in spreading his teachings?

The 12 apostles of Jesus were Peter, Andrew, James, John, Philip, Bartholomew, Thomas, Matthew, James the son of Alphaeus, Thaddaeus, Simon the Zealot, and Judas Iscariot. Each apostle played a role in spreading Jesus' teachings by traveling to different regions to preach the gospel, perform miracles, and establish Christian communities. Peter was considered the leader of the apostles, while Judas Iscariot infamously betrayed Jesus.