To assist parishes with the formation of their flock, several Servants are invited to speak at parish missions each year. Servants have been asked to preach on a variety of topics for general parish missions, but are most often asked to preach on the Spiritual Exercises and evangelization.
In Rome on Ash Wednesday 2016, Pope Francis appointed Fr. John Ignatius and Fr. Paul Kostka as "Missionaries of Mercy" for the Jubilee Year of Mercy. Among their various responsibilities, they were tasked to be inspiring preachers of mercy and forgiveness.