There is nothing in the world that Jesus cannot transform.
God chooses horrible people - Paul makes that pretty clear. He writes about the aftermath of the Damascus Road experience. This isn't about fairness or goodness - it's about love.
Only the lamb of God holds the power to transform a murderous heart of stone into a disciple's heart.
Philip meets a guy who's skipped a family for a successful career in finance. It's the first short-term mission trip recorded in the New Testament, and can teach us a few things about conversion.