The message of the gospel is one of those messages that can be expressed in so many different ways and it benefits from all this diversity. But if I had only one sentence available, how would I express it?
Hmmmm. Tricky. OK. Here is a first attempt.
God has acted in Jesus the Messiah—through his incarnate life, death, resurrection, and ascension—to set the world right and to bring creation to its intended destiny.
If you had one sentence, how would you express the gospel?