The subject of the article is the moral and religious ambiguity of St. Paul’s conversion; rabbi Saul of Tarsus, who had previously been a persecutor of Christians, encountered a resurrected Jesus and proceeded to accept Him as the Messiah, becoming a zealous apostle. On one hand, the moral meaning of his conversion is a positive one, as it shows that even the worst villain can receive God’s forgiveness if they understand their mistake and change their behavior. On the other, however, Paul’s case suggests that God’s mercy is an injustice—it shows that ceasing to do evil and accepting the true faith is enough to avoid punishment for previous evil deeds. The religious meaning of conversion is similarly ambiguous; on one hand God is merciful because He forgave a person who persecuted His followers because he understood his mistake, converted, and accepted the true faith. However, there is an injustice here; converted sinners and Christ’s persecutors may receive salvation given that they are baptized and join the Church, meanwhile people who are moral but do not believe in God and were not baptized cannot be saved despite never having committed any atrocity.