The Gospel is news of what God has done to reach us. It is not advice about what we must do to reach God.
Timothy KellerTo preach the gospel is to show people their need for salvation against a backdrop of God's nature and the character of sin, and then present Jesus as the only remedy for what ails them and the world. In my weekly preaching in the worship services I always call people to believe in Christ.
Timothy KellerThe Gospel is this: You're more sinful, evil and weak than you'd ever believe. But you're more valued, accepted and loved than you dared hope.
Timothy Keller