Catechism of the Catholic Church §203 — excerpt
God revealed himself to his people Israel by making his name known to them. A name expresses a person's essence and identity and the meaning of this person's life.
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.