Catechism of the Catholic Church §2198 — excerpt
This commandment is expressed in positive terms of duties to be fulfilled. It introduces the subsequent commandments which are concerned with particular respect for life, marriage, earthly goods, and speech.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.