One day St. Matthew was a tax collector, accustomed to cheating people; the next day a follower of Jesus. How does such dramatic change in a life happen? The Psalmist says, “A broken and contrite heart, O God, you will not despise” (Ps. 51:17). God had to first break Matthew’s hardened heart in order for Christ’s call to reach him. It is only after a heart has broken from the preaching of the gospel that people can truly hear and respond to God’s call on their lives. Then God begins the work of healing and forming new hearts by his Holy Spirit.