Catholic theology
Catholic belief holds that the church exists both on earth and in heaven simultaneously, and thus the Virgin Mary and the saints are alive and part of the living church. Prayers and devotions to Mary and the saints are common practices in Catholic life. These devotions are not worship, since only God is worshiped. The church teaches that the saints "do not cease to intercede with the Father for us. ... So by their fraternal concern is our weakness greatly helped."
Catholic prayers to Jesus
Various prayers listed in this article are due to saints, or have been used by saints (e.g. Augustine of Hippo, Ignatius of Loyola, Louis de Montfort, etc.) but they are usually not associated with a specific Catholic devotion with a feast day. They are therefore grouped separately from the prayers that accompany Roman Catholic devotions to Christ such as Holy Face of Jesus or Divine Mercy.