Dr. Russell Moore on the Doctrine of Adoption from "Adopted for Life"

[With so many systematic theologies and confessions of faith published by Christians throughout the centuries, what work is there left for a theologian to do? One endeavor that is, I believe, beneficial to the Church as a whole is when theologians devote themselves to a fresh, thoroughly biblical examination of doctrines that have been under-emphasized in other writings. Part of what Dr. Russell Moore accomplishes in Adopted for Life is just this: Dr. Moore elucidates and systematically presents the doctrine of adoption found in the pages of Scripture. In the following short passage from Chapter 2-- which I've picked almost at random because there is so much gold here-- Dr. Moore explains some results of God's adopting work.]

The Spirit is continually telling the people of Christ that they-- excuse me, that WE-- are blessed in Christ through adoption (Eph 1:3-5). We are all Abraham's children because Jesus is (Gal 3:28-29). Perhaps we were, at one time, Gentiles, but we aren't part of the uncircumcised order anymore (Eph 2:11). We are all now fellow citizens with the saints and members of the household of God (Eph 2:19). We are to exchange our old self for the new self created after the likeness of God (Eph 4:22-24). We are now brothers (Rom 8:12).