Confirmation is the Sacrament in which one is enriched by the gift of the Holy Spirit and bound more perfectly to the Church. It strengthens us and obliges us to be witnesses to Christ by word and deed and to spread and defend the faith. It is the Sacrament in which one enters into full membership in the Catholic Church. Confirmation perfects Baptismal grace; it is the sacrament which gives us the Holy Spirit in order to root us more deeply as children of God, incorporate us more firmly into Christ, strengthen our bond with the Church, associate us more closely with her mission, and help us to bear witness to the Christian faith in words accompanied by deeds. Confirmation, like Baptism imprints a spiritual mark or indelible character on the Christian soul; for this reason one can receive this sacrament only once. A Christian does not live as a child of God through his or her own efforts alone, but through the grace of God. We see this in a practical way when we look back on our own lives and the lives of others, even the lives of saints. Therefore, it is our duty to seek the grace that God offers us in order to live our lives as Christians in the way that God intends.