Now Thomas, one of the Twelve, called the Twin, was not with them when Jesus came. So the other disciples told him, "We have seen the Lord." But he said to them, "Unless I see in his hands the mark of the nails, and place my finger into the mark of the nails, and place my hand into his side, I will never believe."
Eight days later, his disciples were inside again, and Thomas was with them. Although the doors were locked, Jesus came and stood among them and said, "Peace be with you." Then he said to Thomas, "Put your finger here, and see my hands; and put out your hand, and place it in my side. Do not disbelieve, but believe." Thomas answered him, "My Lord and my God!" Jesus said to him, "Have you believed because you have seen me? Blessed are those who have not seen and yet have believed."
Eight days later, his disciples were inside again, and Thomas was with them. Although the doors were locked, Jesus came and stood among them and said, "Peace be with you." Then he said to Thomas, "Put your finger here, and see my hands; and put out your hand, and place it in my side. Do not disbelieve, but believe." Thomas answered him, "My Lord and my God!" Jesus said to him, "Have you believed because you have seen me? Blessed are those who have not seen and yet have believed."
-John 20:24-29
The Incredulity of St. Thomas by Caravaggio
The disciples lives were radically changed through the experience of Christ and the acceptance of his message, thus changing the history of the world. Today, people are experiencing these same radical changes. I encourage you to look at your own life or someone you know, and reflect on how through the experiences of justification and sanctification, their has been radical changes. One thing is certain, in the skeptical world we live in, God is alive and at work changing the world today. Through the Bible and the founders of the Christian faith we know that this is only because of the message and opportunity provided by Christ. And to that, there is no doubt.