For the essence of sin is man substituting himself for God [Gen. 3:1-7], while the essence of salvation is God substituting himself for man [2 Cor. 5:21]. Man asserts himself against God and puts himself where only God deserves to be; God sacrifices himself for man and puts himself where only man deserves to be.
John StottInstead of inflicting upon us the judgment we deserved, God in Christ endured it in our place.
John StottAt the cross in holy love God through Christ paid the full penalty of our disobedience himself.
John StottAmbitions for self may be quite modest. . . . Ambitions for God, however, if they are to be worthy, can never be modest. There is something inherently inappropriate about cherishing small ambitions for God. How can we ever be content that he should acquire just a little more honour in the world? No. Once we are clear that God is King, then we long to see him crowned with glory and honour, and accorded his true place, which is the supreme place. We become ambitious for the spread of his kingdom and righteousness everywhere.
John Stott