Roman Catechism 26.49

Chapter 26 — Part III: The Decalogue — The Third Commandment

Section 49. Likewise the faithful should give themselves to frequent prayer and the praises of God; and an object of their special attention should be to learn those things which pertain to a Christian life, and to practice with care the duties of piety, such as giving alms to the poor and needy, visiting the sick, and administering consolation to the sorrowful and afflicted. Religion clean and undefiled before God and the Father is this, says St. James, to visit the fatherless and widows in their tribulation.