Phrases from the Bible: Road to Damascus

Saint Paul (?3AD-?68AD) was a Christian apostle (= someone chosen by Jesus to teach and spread the Christian religion) whose original name was Saul of Tarsus. As a young man, he refused to accept Christian beliefs and treated Christians very cruelly. He was sent to Damascus to punish the Christians who lived there, but on his way there a very bright light suddenly appeared and he heard Jesus ask "Saul, Saul, why do you persecute me?". He then became a Christian, changed his name to Paul, and spent the rest of of his life teaching people about Jesus. He wrote many of the epistles in the New Testament of the Bible.
From this Biblical story comes the phrase "the road to Damascus" which refers to an experience that completely changes the way that you think about something.