His Apostles Were Dramatically Changed
When one of Jesus' inner circle defected and betrayed Him, the other apostles ran for their lives. Even Peter, who earlier had insisted that he was ready to die for his teacher, lost heart and denied that he even knew Jesus. But the apostles went through a dramatic change. Within a few weeks, they were standing face to face with the ones who had crucified their leader. Their spirit was like iron. They became unstoppable in their determination to sacrifice everything for the one they called Savior and Lord. Even after they were imprisoned, threatened, and forbidden to speak in the name of Jesus, the apostles said to the Jewish leaders, "We ought to obey God rather than men" (Acts 5:29). After they were beaten for disobeying the orders of the Jewish council, these once-cowardly apostles "did not cease teaching and preaching Jesus as the Christ" (Acts 5:42).
 

Witnesses Were Willing To Die For Their Claims
History is full of martyrs. Countless men and women have died for their beliefs. For that reason, it is not that significant to point out that the first disciples were willing to suffer and die for their faith. But it is significant that while many will die for what they believe to be the truth, few if any will die for what they know to be a lie. That psychological fact is important because the disciples of Christ did not die for deeply held beliefs about which they could have been honestly mistaken. They died for their claims to have seen Jesus alive and well after His resurrection. They died for their claim that Jesus Christ had not only died for their sins but that He had risen bodily from the dead to show that He was like no other spiritual leader who had ever lived.
 

Jewish Believers Changed Their Day Of Worship
The Sabbath day of rest and worship was basic to the Jewish way of life. Any Jew who did not honor the Sabbath was guilty of breaking the law of Moses. Yet Jewish followers of Christ began worshiping with Gentile believers on a new day. The first day of the week, the day on which they believed Christ had risen from the dead, replaced the Sabbath. For a Jew, it reflected a major change of life. The new day, along with the Christian conversion rite of baptism, declared that those who believed Christ had risen from the dead were ready for more than a renewal of Judaism. They believed that the death and resurrection of Christ had cleared the way for a new relationship with God. The new way was based not on the law, but on the sin-bearing, life-giving help of a resurrected Savior.
 

Although It Was Unexpected, It Was Clearly Predicted
The disciples were caught off guard. They expected their Messiah to restore the kingdom to Israel. Their minds were so fixed on the coming of a messianic political kingdom that they didn't anticipate the events essential to the salvation of their souls. They must have thought Christ was speaking in symbolic language when He kept saying over and over that it was necessary for Him to go to Jerusalem to die and be resurrected from the dead. Coming from one who spoke in parables, they missed the obvious until after it was all over. In the process, they also overlooked the prophet Isaiah's prediction of a suffering servant who would bear the sins of Israel, being led like a lamb to the slaughter, before God "prolong[ed] His days" (Isaiah 53:10).