The first Adam was called God’s son (Luke 3:38) and in a sense this was true, but that sonship was never fully realized; all its meaning, all its potential, all the divine intention, was never known. It was sonship on probation which never attained to determination. In the case of the Lord Jesus, however, we are told that He was “determined the Son of God…” (Romans 1:4 m.). The first Adam failed, and in him the whole race lost its sonship. That was why the Lord Jesus went to the Cross as representative of the whole race, to meet the final consequences of that lost sonship. Those consequences were known in that eternal period of unspeakable agony, when there was the awful consciousness of what it means to be abandoned by God. By nature we are out of Christ, without God and without hope in this world, but we are not fully aware of it nor of what it involves. In that phase of the Cross, the Lord Jesus was, so to speak, projected into the full realization of that complete consciousness of what God-forsakenness really means, that which is the very terrible destiny of all deliberate rejectors to find themselves rejected.
But while our sonship through the Cross and the risen Christ is to be appropriated and entered into by faith as an act, yet for the purpose of our testimony here, it is something which has to be continuous as a spiritual experience. It is accepted in an act, but it has to be borne out in a continuous process. The New Testament shows that sonship is something which relates to the whole life of the believer in a practical way of expression, so that inasmuch as it is inseparably bound up with resurrection in the case of the Lord Jesus, for us it demands a constant experience of His resurrection power.
How do we know sonship? Well, there was a time when we believed, and in believing were made children or sons of God. “Ye are all sons of God, through faith in Christ Jesus” (Galatians 3:26). Because we believe, we have the sonship. That is very good, and of course we have always to cling tenaciously by faith to the fact that it is so. But that may have been years ago. Did the Lord just mean it to be something in our past history, something which took place years ago? We have always to hold on to that transaction with the Lord and believe, but does it not call for a reinforcement as we go along? Is there no opportunity for it to be more and more confirmed? Surely the Word teaches that there is; and so not only the origin but the experience of the believer should be that of sonship being freshly demonstrated and manifested on the same ground as its origin – that is, resurrection.