"Our only hope for living the radical demands of the Christian life is that God is totally for us now and forever. Therefore, God has not ordained that living the Christian life should be the basis of our hope that God is for us. That basis is the death and righteousness of Christ, counted as ours through faith alone. On the cross Christ endured for us all the punishment required of us because of our sin. And in order that God as our Father, might be completely for us and not against us forever, Christ has performed for us, in His perfect obedience to God, all that God required of us as the ground of His being totally for us forever".
John Piper - "The Future of Justification: A Response to N T Wright" - IVP, Nottingham (2008) - (p184).