A). A born agan Christian is a Son of God.
= made so by the blood atonement making them as righteous as "the righteousness of God, In Christ".
So, this is the establishment of the born again believer in Christ : AS "One with God and Christ".
This is eternal.
So, what has happened is, the dead spirit in an unbeliever who has believed in Jesus after hearing the Gospel, has been Spiritually BIRTHED as a "NEW CREATION" into the very Spirit of God, BY the Holy Spirit of God.
Each born again person has BECOME "ONE WITH GOD and Christ", = Spiritually.
This is the "new man".
This means that each born again have become a part of THE ETERNAL LIFE, who is JESUS.
Eternal life is Jesus..... Its not a time period. This is why Christ tells us that if we BELIEVE IN HIM< then He "gives to us Eternal life" and that life is Christ Himself IN YOU>...>"the hope of Glory".
And this new birth actually places us into the same righteousness as ADAM before he fell.
So, you have the 2nd Adam, who is Jesus The God man, restoring you back to 1st Adam status, by His Blood, which makes you as righteous as : the "Gift of Righteousness", which is "the Gift of Salvation".
So, each born again person is now a new creation "in Christ", and they-we now exist as "translated from darkness TO Light", (Kingdom of God), which has caused us to become :
1. Heir of God
2. Joint Heir with Christ
3. Temple of the Holy Spirit
4. Saint
5. "as Jesus IS so ARE the born again IN THIS WORLD".