Saul was a persecutor (killer) of Christians in the time of Jesus. Saul’s story is located in the book of Acts. Saul was an evil person because he captured Christians and brought them to a place where they would be killed. Saul is better known as Paul. The story of how Saul became Paul is found in Acts 9: 1-9.
9 Meanwhile, Saul was still breathing out murderous threats against the Lord’s disciples. He went to the high priest 2 and asked him for letters to the synagogues in Damascus, so that if he found any there who belonged to the Way, whether men or women, he might take them as prisoners to Jerusalem. 3 As he neared Damascus on his journey, suddenly a light from heaven flashed around him. 4 He fell to the ground and heard a voice say to him, “Saul, Saul, why do you persecute me?”
5 “Who are you, Lord?” Saul asked.
“I am Jesus, whom you are persecuting,” he replied. 6 “Now get up and go into the city, and you will be told what you must do.”
7 The men traveling with Saul stood there speechless; they heard the sound but did not see anyone. 8 Saul got up from the ground, but when he opened his eyes he could see nothing. So they led him by the hand into Damascus. 9 For three days he was blind, and did not eat or drink anything.
When Saul received sight again he went and praised the Lord and preaching about Him. Soon enough he was renamed Paul. He also wrote many books of the Bible. Some of these are Galatians, Romans, 1 Corinthians, and 2 Corinthians.