Christadelphians believe in the one God revealed to Israel, in Jesus of Nazareth as a man, born of the Holy Spirit by Mary, put to death as a sin-offering, raised from the dead, exalted to the heavens, and declared to be son of God;
In the divine origin of the words spoken by Jesus, the prophets and the apostles. In the absolute necessity of understanding the Old Testament, in order to come to a correct New Testament faith. In the promises made to Abraham, Isaac and Jacob, in the covenant made with David, and therefore in the second (personal) coming of Jesus to earth to restore the Jews from dispersion, re-establish the kingdom of David, possess the holy land, subdue all kingdoms on earth, and reign universally for 1,000 years, at the end of which, having put down all enemies, including death itself. He will give up the kingdom to the Father, that God may be all in all.
They further believe.
That mankind in Adam is under a just condemnation of death, that the Christ, as a second Adam, brought immortality to light by death and resurrection. That in order to obtain a title to this immortality, men must:
Believe in the foregoing “things concerning the Kingdom of God and the name of Jesus Christ.”
Be immersed in water for a union with his name.
And continue in the steadfast service of him till the end.
That Christ at his appearing will judge his servants, living and dead, and
Give eternal life to those who are worthy, and appoint them rulers in his kingdom on earth; and
Condemn to second death those who are unworthy.
The Origin of the Organic World – Part One