The fourth chapter of Plantinga's Engaging God's World is titled, "Redemption" and discusses the importance of God's grace and mercy for His creation. Despite our desires to be close to God, sin creates a barrier between the Creator and creation. Humans sin constantly and we rely on the grace of God to forgive us of that sin, which Jesus paid for with His blood on the cross. Christians, for the most part, understand what is right and what is wrong, and how to control their actions. However, action is not always the sin, failing to act when injustice occurs in the world, and turning our face away from evils we know to be sinful. Christians, today, must not conform to society’s standards of what is right, but conform to scripture and what God says is right. Only then, will non believers see what the grace of God is like, through our actions.
God forgives all those who sin, if we only ask for it and believe that Jesus is our Lord and Savior. Therefore, we should be willing to forgive those who do wrong to us because God forgives all sins. Lewis explains this concept in his essay, "On Forgiveness", by asking, how we can expect God to forgive, if we fail to forgive those who sin against us.