Were the Eyewitnesses to Jesus’ Resurrection telling the Truth?
The Disciples Were Utterly and Completely Transformed by their firm conviction that they had seen the risen Jesus, even being willing to die for this belief
The Apostle John in John 7:1-5 reports that James the half-brother of Jesus was an unbeliever and apparently rather cynical regarding Jesus’ public ministry (just imagine if it was your brother who claimed to be God!). Jesus’ other brothers even sought to remove Him from public eye because they thought He was insane (Mark 3:21) – but later in Gal. 1:18-19; Acts 15:13-21 – we learn that James had become the leader of the early church in Jerusalem. It is highly likely that James was transformed by something or someone he saw and had a huge change of heart about his half brother Jesus. What was it that changed the mind of James? The most likely explanation was that James had seen the risen Jesus.
The Pharisee, Saul of Tarsus (later, Paul) who was an early persecutor of Jesus’ followers, also had an experience that changed him forever. 1 Cor. 9:1 & 15:8-11 gives us a first-hand account of this experience and it appears three other times in Acts 9:1-9; 22:1-11; 26:9-19.
The other apostles confirmed Paul’s experience. Paul even made at least two trips to Jerusalem to speak with the apostles in order to talk to them about the “gospel message” He was preaching. On his second trip to Jerusalem Paul met with two of the chief apostles, namely Peter, James the brother of Jesus and John. Paul specifically explained that the purpose of His coming was to identify the nature of the Gospel that he was preaching and that he wanted to be absolutely sure that he was correct (Gal. 2:2).
There are many other detailed eyewitness details which testify that the New Testament writers were telling the truth.
Why would the apostles lie? …If they lied, what was their motive, what did they get out of it? What they got out of it was misunderstanding, rejection, persecution, torture, and martyrdom. Hardly a list of perks!
https://crossexamined.org/what-really-happened-at-jesus-tomb/