Even the Apostle Paul experienced something similar with his friend and fellow missionary, Barnabus.
First, Paul, formerly Saul, was transformed by encountering Jesus on the road to do what he was doing best; terrorizing and persecuting God’s people. Seriously, he was the meanest of the mean.
Next, after the incredible encounter in Acts 9:1-22, Paul’s heart softened. His passion became reaching others and sharing the love of Jesus with God’s chosen people, the Jews. Also, any person without a Jewish heritage, the Gentiles. In other words, everyone.
Paul, formerly Saul, punisher of the Jews, was paired with Barnabus as seen in Acts 13:2 by God’s plan, and a beautiful partnership was forming.