Have you ever stopped to think about what sin really is? Any sin–whether mortal or venial–offends God, and we should make reparation to him for our sins and those of others. Ways we can make reparation include going to Mass, visiting the Blessed Sacrament, praying, and making sacrifices.
One special prayer of reparation is a prayer of reparation to the Sacred Heart of Jesus, which was composed by Pope Pius XI. Sacred Heart of Jesus, we love You!