The could not see that he was the Messiah
And those Jews who did see Jesus as Messiah are considered to be Christians, not Jews who 'saw the light'. Therefore, your question answers itself.
Christ-Christians
Saul hated Christians until he was converted.
No. Saul became Paul because Saul murdered Christians, but when he started following Jesus, Jesus changed his name to Paul.
Saul persecuted Christ's followers. (Acts 9:1, 4, 17)
Saul who became Paul was a sworn enemy of jesus first.
Saul was also called Paul which we know him as better. In the book of Acts in chapter 9 it tells of Sauls conversion while travelling to Damascus. Saul was still working against the Christians when he was "intercepted" by Jesus. Jesus asked him why he was persecuting him. After saul was blinded by the light that shone from Jesus, Jesus told him to go into the city where he would receive further instructions. In Damascus a disciple of Christ named Ananias met with Saul (under Jesus's direction) and told him what Jesus told him to say. Saul's blindness was healed and he began preaching the good news about Jesus. In chapter 13, the Holy Spirit told them that Barnabas and Saul were to be set apart for the work to which Jesus had called them. This was the commissioning of Saul to begin preaching Jesus to people full time.
Saul, who later became known as the apostle Paul, initially persecuted Christians and played a role in the martyrdom of Stephen. However, after experiencing a dramatic conversion on the road to Damascus, he became a fervent follower of Jesus Christ and devoted his life to spreading the gospel.
The individual first named Saul was alive when the ancient Roman empire occupied Judea. After a religious experience, Saul stopped persecuting Christians and became an apostle of Jesus Christ. He was renamed Paul. Reportedly Paul was executed in Rome.
Saul, later known as the apostle Paul, was given authority by the high priest in Jerusalem to arrest Christians. He believed it was his duty to persecute followers of Jesus, which led to his transformation after a personal encounter with Jesus on the road to Damascus.
In Acts, Saul persecutes Christians because he did not believe Jesus was the son of God. He had many Christians killed before he was spoken to by Jesus and was then converted and is now known as St. Paul.
Saul / Paul believed Jesus is the Son of God:2Corinthians 1:19 For the Son of God, Jesus Christ, who was preached among you by us..............Saul/Paul believed that one day Jesus will return to earth to judge all of mankind:2Timothy 4:1 I charge you therefore before God and the Lord Jesus Christ, who will judge the living and the dead at His appearing and His kingdom:Saul/Paul believed that a person is saved/put right with God through faith in Jesus:Galatians 2:16 knowing that a man is not justified by the works of the law but by faith in Jesus Christ, even we have believed in Christ Jesus, that we might be justified by faith in Christ and not by the works of the law; for by the works of the law no flesh shall be justified.1Thessalonians 5:9 For God did not appoint us to wrath, but to obtain salvation through our Lord Jesus Christ,
Saul's name was changed to Paul after he accepted Jesus as his savior. Paul became an apostle.