One of the earliest protesters in Christianity was Arius (256-336 CE), the fourth century priest in Alexandria, Egypt. He believed that God the Father created the universe through the divinely created Christ, but that Jesus was a creature. Athanasius, the Bishop of Alexandria disagreed. The Roman Emperor Constantine called a general council at Nicaea in 325 to settle this dispute. The result was the definition that Christ was the Son of the Father begotten of the same substance – homousious. Jesus was truly divine.
For the followers of Jesus, he was the anointed one, the Messiah, the Christ. They believed that Jesus the Christ implied that God was unique in Jesus of Nazareth, in his life, death and resurrection. Jesus reconciled humanity to God and us with one another. He redeemed mankind. He rose from the dead. Christians believe in Jesus Christ, the savior, who was not like everyone else, since he was the Christ of faith. As later doctrinal statements will say, he was truly human and truly God, the son of the Father, filled with the Holy Spirit.