The apostle Paul was on his way to Damascus to begin the process of searching for and hunting down Christians for which to persecute them, up to and including death. On that Damascus Road, seeking to cause incredible harm and pain, God chose this young man, then named Saul, to become exactly what he came to be in his written texts. And although Paul was chosen to spread the Gospel, he was also chosen to suffer a great deal for our Powerful, Almighty God.
It wasn't too late for a professional killer such as Paul, and so it is not late for you.
If I could impart anything to you, it would be to never forget the below seven verses. These verses are what the Bible revolves around . . . nothing is more important that you know, seek, and obtain:
Colossians 2:9-15 NLT - "For in Christ lives all the fullness of God in a human body. So you also are complete through your union with Christ, who is the head over every ruler and authority. When you came to Christ, you were "circumcised," but not by a physical procedure. Christ performed a spiritual circumcision--the cutting away of your sinful nature. For you were buried with Christ when you were baptized. And with him you were raised to new life because you trusted the mighty power of God, who raised Christ from the dead. You were dead because of your sins and because your sinful nature was not yet cut away. Then God made you alive with Christ, for he forgave all our sins. He canceled the record of the charges against us and took it away by nailing it to the cross. In this way, he disarmed the spiritual rulers and authorities. He shamed them publicly by his victory over them on the cross."