Roman Catechism 24.18

Chapter 24 — Part III: The Decalogue — The First Commandment

Section 18. A stronger claim which the Saints have to be honoured and invoked is that they constantly pray for our salvation and obtain for us by their merits and influence many blessings from God. If there is joy in heaven over the conversion of one sinner, will not the citizens of heaven assist those who repent? When they are invoked, will they not obtain for us the pardon of sins, and the grace of God ?