Should all Christians, especially evangelicals, hold on to the doctrine of the eternal generation of the Son? What is lost if we don't? Theologian Kevin Giles defends the historically orthodox and ecumenical doctrine of the eternal generation of the Son of God. He argues on biblical, historical and theological bases that, given its fundamental meaning, this formulation is indispensable, irreplaceable and faithful to Christian revelation. The book will be especially helpful in the current discussion of this doctrine. It will also be of interest to students, pastors and laypersons who want to delve into the Christian understanding of the identity of the Son of God and serious study of trinitarian theology.