We can read of many examples in the scriptures of people who were transformed by coming to know Jesus as their Lord and Saviour. The Gospel is preached that you may come to Jesus. The Lord Jesus came into this world to rescue the sinner and He is able to truly transform us from a life of sin to a life that pleases God.
Bible Scriptures: Darby Translation
2 Corinthians 3:18 “ But *we* all, looking on the glory of the Lord, with unveiled face, are transformed according to the same image from glory to glory, even as by [the] Lord [the] Spirit.”