Answer:
They believe that it is their duty to act moral which involves helping others
Protestantism is the most widespread.
It's the principle symbol of Christianity, recalling the crucifixion of Jesus Christ, redeeming benefits of his passion and death, The cross is a sign of Christ himself and the faith of Christians.
They help Christian's study Christianity. They obtain most of their knowledge and understanding of Jesus through the gospels. Gospel is the word of God.
John the Baptist, considered forerunner of Christianity, Jesus is considered to have instituted the sacrament of Baptism.