It is important that we understand the Gospel in such a way that we can explain it in a simple fashion. With this in mind Mark Dever understands the good news in this way:
The good news is that the one and only God, who is holy, made us in his image to know him. But we sinned and cut ourselves off from him. In his great love, God became a man in Jesus, lived a perfect life, and died on the cross, thus fulfilling the law himself and taking on himself the punishment for the sins of all those who would ever turn and trust in him. He rose again from the dead, showing that God accepted Christ’s sacrifice and that God’s wrath against us had been exhausted. He now calls us to repent of our sins and trust in Christ alone for our forgivenss. If we repent of our sins and trust in Christ, we are born again into a new life, an eternal life with God.
Isn’t that Great News?