Catechism of the Catholic Church §664 — excerpt
Being seated at the Father's right hand signifies the inauguration of the Messiah's kingdom, the fulfilment of the prophet Daniel's vision concerning the Son of man: "To him was given dominion and glory and kingdom, that all peoples, nations, and languages should serve him; his…
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.
Also cites: Nicene Creed