The Chaplet of Divine Mercy is a Catholic prayer that is done with rosary beads. It is a devotional prayer that focuses on God’s mercy and requests forgiveness and compassion. The prayer consists of repeating certain phrases, such as the “Hail Mary” and “Eternal Father” prayers, as well as the line “For the sake of His sorrowful Passion, have mercy on us and on the whole world.” Catholics frequently pray the Chaplet of Divine Mercy as a form of spiritual meditation and penance.