There are a few books after the gospels that talk about what the disciples did after Jesus' death, but I would suggest Acts, in the New Testament.
The witnesses of Jesus after his resurrection were his disciples, including Peter, James, John, and others who saw him alive after his crucifixion.
The event in the Gospels that convinced the disciples that Jesus was the Son of God was the resurrection of Jesus after his crucifixion.
Jesus appeared to the disciples after his resurrection on the third day.
After Jesus' crucifixion, the disciples were in hiding and feeling fearful. They were unsure of what to do next and were grieving the loss of Jesus.
The disciples were both confused, afraid, angry and sad about Jesus Crucifixion because they had not fully understood Jesus' explanation about his upcoming death and resurrection.
In the Gospel of Luke, 13 - 53, two disciples of Jesus met, spoke and ate with him after his crucifixion and resurrection, then told others about the event. Jesus' followers believed the witnesses and so more readily believe in the resurrection themselves.
Peter, one of Jesus' disciples, denied knowing him three times before Jesus' crucifixion. After Jesus' resurrection, Peter became a prominent leader in the early Christian church.
After his resurrection, Jesus was seen by his disciples, Mary Magdalene, and other followers.
As far as I know Mark went to Egypt after the crucifixion.
Because they had been with him for around 3 years and witnessed his life, his teachings, his crucifixion and resurrection and were told to go out and testify and make disciples!
Jesus' closest disciples witnessed his miracles, teachings, crucifixion, and resurrection. They were with him throughout his ministry, witnessing his profound wisdom, healing powers, and the fulfillment of prophecies. Their experiences with Jesus shaped their faith and empowered them to spread his teachings after his death.
No, Paul was not one of Jesus' first disciples from Galilee. Originally known as Saul of Tarsus, he became a follower of Jesus after the crucifixion and resurrection. His conversion occurred on the road to Damascus, and he became an influential apostle, spreading Christianity primarily to Gentile communities.