Catechism of the Catholic Church §2575 — excerpt
Here again the initiative is God's. From the midst of the burning bush he calls Moses. This event will remain one of the primordial images of prayer in the spiritual tradition of Jews and Christians alike.
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.