God’s eternal Son was born to Mary, a virgin, from whom he received his humanity. Fully human, he was nonetheless without sin, having been conceived by the Holy Spirit. Having lived with perfect holiness, he bore in his death the penalty of all others’ sin. After God the Father raised him from death he returned in triumph to heaven where he represents his people. He will come again to rule over the earth for a thousand years.
Why is it necessary that we believe this? Jesus became human like us. But if he had been born through the sexual union of a man and woman, he would have inherited the sin problem common to us all. Therefore he needed to become human in a miraculous way. This was accomplished by the creative power of the Holy Spirit causing new life within Mary, so that a child was born to a virgin. Being born without sin was not enough. Jesus, as he grew from childhood to a man, had to remain pure in his mind, attitude and his actions. Even if he had failed once, everything would have been lost! The whole point of a sinless birth and life was that he could be a perfect sacrifice when he died for us. When he was crucified, all the sin ever committed was ‘laid’ on him (accounted to him) and Jesus was then punished for that sin (which was ours). He then died taking the full consequences for our sin. God the Father was satisfied with Jesus’ sacrifice and therefore, according to the Scriptures, Jesus rose from the dead, triumphing over it, as the first one to rise. He rose with a new, eternal body which one day all Christians will possess. One day, he will return to reign as King of Kings.