In Christianity, Jesus is the Son of God and in many mainstream Christian denominations he is God the Son, the second Person in the Trinity. He is believed to be the Jewish messiah who is prophesied in the Hebrew Bible, which is called the Old Testament in Christianity. It is believed that through his crucifixion and subsequent resurrection, God offered humans salvation and eternal life, that Jesus died to atone for sin to make humanity right with God.
These teachings emphasize that as the Lamb of God, Jesus chose to suffer on the cross at Calvary as a sign of his obedience to the will of God, as an "agent and servant of God". Jesus' choice positions him as a man of obedience, in contrast to Adam's disobedience.
While there has been theological debate over the nature of Jesus, Trinitarian Christians believe that Jesus is the Logos, God incarnate, God the Son, and "true God and true man"—both fully divine and fully human. Jesus, having become fully human in all respects, suffered the pains and temptations of a mortal man, yet he did not sin.
According to the Bible, God raised him from the dead. He ascended to heaven to sit at the right hand of God, and he will return to Earth again for the Last Judgment and the establishment of the Kingdom of God.
If the cross stands at the center of Paul's theology, so does the Resurrection: unless the one died the death of all, the all would have little to celebrate in the resurrection of the one. Paul taught that, just as Christians share in Jesus' death in baptism, so they will share in his resurrection for Jesus was designated the Son of God by his resurrection.[Rom. 1:4]  Pa
In the teachings of the apostolic Church, the resurrection was seen as heralding a new era. Forming a theology of the resurrection fell to Apostle Paul. It was not enough for Paul to simply repeat elementary teachings, but as Hebrews 6:1 states, "go beyond the initial teachings about Christ and advance to maturity". Fundamental to Pauline theology is the connection between Christ's resurrection and redemption. Paul explained the importance of the resurrection of Jesus as the cause and basis of the hope of Christians to share a similar experience in 1 Corinthians 15:20-22:
But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep. For since death came through a man, the resurrection of the dead comes also through a man. For as in Adam all die, so in Christ all will be made alive.
If the cross stands at the center of Paul's theology, so does the Resurrection: unless the one died the death of all, the all would have little to celebrate in the resurrection of the one. Paul taught that, just as Christians share in Jesus' death in baptism, so they will share in his resurrection for Jesus was designated the Son of God by his resurrection.[Rom. 1:4]  Paul's views went against the thoughts of the Greek philosophers to whom a bodily resurrection meant a new imprisonment in a corporeal body, which was what they wanted to avoid, given that for them the corporeal and the material fettered the spirit. At the same time, Paul believed that the newly resurrected body would be a spiritual body—immortal, glorified and powerful, in contrast to an earthly body which is mortal, dishonored and weak.
The The Apostolic Fathers, discussed the death and resurrection of Jesus, including Ignatius (50−115), Polycarp (69−155), and Justin Martyr (100−165). Following the conversion of Constantine and the liberating Edict of Milan in 313, the ecumenical councils of the 4th, 5th and 6th centuries, that focused on Christology helped shape the Christian understanding of the redemptive nature of Resurrection, and influenced both the development of its iconography, and its use within liturgy.
The doctrine of the Trinity—including the belief that Jesus is a Person of the Trinity—is not universally accepted among Christians. Nontrinitarian Christian groups include The Church of Jesus Christ of Latter-day Saints, Unitarians and Jehovah's Witnesses. Though modern nontrinitarian groups all reject the doctrine of the Trinity, their views still differ widely on the nature of Jesus. Some do not believe that Jesus is God, instead believing that he was a messenger from God, or prophet, or the perfect created human. This is the view espoused by ancient sects such as the Ebionites, and modern-day Unitarians.