The conversion of Saul of Tarsus while he was on his way to Damascus is one of the most touching miracles in the history of the early Church. It shows how faith comes from grace and from one's free cooperation. The doctrine of the Mystical Body of Christ receives proof and a clear illustration when Christ says, "Saul, Saul, why do you persecute me?" We should realize that the best way to hasten unity of all Christians is to foster our own daily conversion.
As a new revert, a term to describe someone like me, who fell away from the faith and the church at twelve, I was amazed over Saul of Tarsus's conversion story, and how humble he became, when he encountered Jesus, and was made blind by him. To me, this miracle stands out as the most unbelievable of all of Christ's miracles. Paul's memory and evangelicalism are what help make Christianity what it is today. Paul certainly went out and did what Mark said in his gospel, (Mark 16:15), "Go out to all the world and tell the Good News."
The Lord never wrote but once in his ministry that history records, and for sure he never told the apostles or disciples to go out and write a bible, but several centuries after his death, the bishops and priests loyal to Christ and tradition compiled the inspired words we have to day, to remember some of the things Christ wanted to be preserved for all mankind.