Is this blessedness only for the circumcised, or also for the uncircumcised? We have been saying that Abraham’s faith was credited to him as righteousness.
Abraham sets the pattern of faith for not only the Old Testament but the New Testament as well. Righteousness is not something that is earned but rather it is something that is given by God because of faith.
In the Old Testament there was the law that was supposed to be upheld. But because no one was able to follow the law, there were sacrifices that were required for the forgiveness of sin. There was nothing magical about these sacrifices that did anything to sin. Instead, it was an act of faith, trust that God would accept them for the forgiveness of sin. Ultimately they looked forward and pointed to Jesus’ sacrifice on the cross.
In the church era, things operate the same way. Instead of looking forward, we look back and respond with faith. Although none of us met Jesus nor witnessed His death and resurrection, we act in faith and believe in Him. Because of this faith our sins are forgiven.