Christ proposes the evangelical counsels, in their great variety, to every disciple. The perfection of charity, to which all the faithful are called, entails for those who freely follow the call to consecrated life the obligation of practicing chastity in celibacy for the sake of the Kingdom, poverty and obedience. It is the profession of these counsels, within a permanent state of life recognized by the Church, that characterizes the life consecrated to God.
The state of consecrated life is thus one way of experiencing a “more intimate” consecration, rooted in Baptism and dedicated totally to God. In the consecrated life, Christ’s faithful, moved by the Holy Spirit, propose to follow Christ more nearly, to give themselves to God who is loved above all and, pursuing the perfection of charity in the service of the Kingdom, to signify and proclaim in the Church the glory of the world to come.
Religious life is distinguished by its liturgical character, public profession of the evangelical counsels, fraternal life led in common, and witness given to the union of Christ with the Church…Religious life in its various forms is called to signify the very charity of God in the language of our time.
Catechism of the Catholic Church, paragraphs 915, 925-96