The covenant of grace is God's gracious response to Adam's failure in the covenant of works. By God promising a champion (Gen 3:15). This champion Jesus Christ, the redeemer of God's elect is the second Adam that brings in life, where the first Adam brought in death (1 Cor. 15). Christ still lives a life under the law that Adam was under, but accomplishes what Adam could not do. God did this because he knew all mankind could not save himself through the law, because he was corrupted by Adam. We who are now in Christ are saved by grace through faith. It is not of our own doing through the works of the law, but only by Christ (Eph. 2:8-9; Gal. 2:16,21; 1 cor. 5:21).