Christians are called to embody the teachings of Jesus and spread the Gospel (“Good News”) of God’s love for humanity through their efforts. This may take a wide variety of forms, including evangelization and service to the community. Sacraments are important religious elements of life, mediating grace from God to the believer. Different denominations vary on what constitutes a sacrament, but the most widely held are baptism, through which individuals are welcomed into the Christian community, and the Eucharist, the sharing of bread and wine in memory of Jesus’ death and resurrection. Catholics, Orthodox Christians, and some Protestants believe that the Eucharist is truly the body and blood of Christ, (transubstantiation) while most Protestants believe it is symbolic. Other sacraments include the confession of sins for the sake of repentance and absolution and the anointing of the sick for those suffering from serious illness. Mass or other forms of weekly church worship generally occur on Sundays.