Each and every one of us has sinned and fallen short of the glory of God. There is none good, not even one. Even if we won't admit that there is a God to whom we are accountable, we can't escape His law that is written on our hearts and the conscience He placed within us that burdens us with the weight of the real guilt we carry. We are helpless to do anything about it, but the wonderful news of the gospel is that God has done what we could not. This is what Christians celebrate and commemorate on Good Friday.
The Missions Mandate Many Christians argue that if God is sovereign in salvation, there is no need to share the gospel. This common fallacy fails to understand the biblical fact that God has not only ordained the ends of salvation, but the means of it. The means is the necessity for Christians to take the gospel to the ends of the earth in obedience to the Great Commission.