What Is Christianity?
Christianity is a faith that was founded by Jesus of Nazareth, who died for our sins and rose from the dead. Christians believe that Jesus is the Son of God and that by trusting him they can inherit eternal life.
Jesus also performed a number of mighty miracles, including casting out demons (Luke 9:40-42), healing the sick (Luke 4:38-41), and raising the dead. These mighty acts of healing were an evidence that Jesus was the Son of God and not a liar.
Despite this, there is an ongoing debate about the actual meaning of Christianity and what it teaches about original sin and how humans are saved. In the past, Christians were quite diverse in their beliefs about these topics, but they consistently expressed a belief in the unity of their faith tradition, and their devotion to that essence was more important than any disagreements about human nature or other defining issues.