 Divine revelation, since it is contained in the Word of God and in Christ, also includes the living tradition or "sensus fidelium", the magisterium, the sacraments, and Catholic dogma.Because the living tradition and the magisterium are a part of divine revelation, they both have divine authority.Because the sacraments are a part of divine revelation, their natures cannot be changed (for example, receiving Holy Communion without mortal sin) but their ways of celebration can be changed (for example, receiving Holy Communion in the hand or on the tongue).