This quote is from R. Michael Allen’s, Justification and the Gospel: Understanding the Contexts and Controversies. In this paragraph Allen begins an ambitious effort to reconcile the participatory view of the gospel with the justification view of the gospel. His view is that they are not, indeed, competitive views but cooperative views of the gospel.
I argue that the gospel is the glorious news that the God who has life in himself freely shares that life with us and, when we refuse that life in sin, graciously gives us life yet again in Christ. While participation in God is the goal of the gospel, justification is the ground of that sanctifying fellowship. We will consider both the goal and the ground of this gospel, arguing that a well-ordered account of the gospel requires that consideration be given to both facets: to participation in God and to justification in Christ. We will see that justification and participation are not competitive visions of the gospel, though they describe different facets of it. We will also consider their logical relationship vis-à-vis union with Christ and how this relationship is manifested in the link between the two sacraments given to the church, baptism and the Lord’s Supper.
Allen, R. Michael (2013-11-19). Justification and the Gospel: Understanding the Contexts and Controversies (Kindle Locations 758-764). Baker Publishing Group. Kindle Edition.