God’s plan of salvation is progressively revealed and administered according to His eternal purpose (2 Tim. 1:9) through the unfolding of the biblical covenants. However, this ‘unfolding’ is not to be understood according to Covenant Theology’s covenantal framework, in which the theologically-deduced Covenant of Works, Covenant of Grace, and Covenant of Redemption occupy center stage. Christ Jesus is the focus of God’s eternal purpose of redemption (2 Cor. 1:20; Eph. 1:10; 1 Peter 1:19-20; Rev. 13:8), hence why New Covenant Theology understands Him to be the telos (i.e. the end, goal) of the biblical covenants. For example, consider the seed promise of Genesis 3:15, which is uniquely fulfilled in the Lord Jesus Christ. The Noahic Covenant (not to mention the Flood) restricted the fulfillment of this promise to a descendant of Noah. Later, the Abrahamic Covenant identified that the unique Seed of the woman would be a descendant of Abraham. The subsequent generational renewals of the Abrahamic covenant progressively limited the fulfillment to a descendant of Isaac and later Jacob (or Israel). Some seven centuries later, God forged His covenant with David – which indicated that a son of David would fulfill the seed promise of Genesis 3:15. The promise made to Eve is ultimately realized in the Lord Jesus Christ (cf. 2 Cor. 2:10) and His New Covenant.
“5. God’s plan of salvation is revealed and administered according to His eternal purpose (II Tim. 1:9) through the unfolding of biblical covenants in the flow of redemptive history, but not as explained through the theologically deduced system of CT’s Covenant of Works / Covenant of Grace / Covenant of Redemption schema” (Long, New Covenant Theology, NCT Characteristics).