The first step is the problem, the “bad news” that we all have a mortal disease called sin, "the Jew first and also the Greek (Gentile)." The good news is that all are offered salvation, "the Jew first and also the Greek. For all have sinned and come short of the glory of God."
The good news makes no sense unless you believe the bad news first. A free operation is not good news if you don’t think you have a mortal disease. In a more realistic age, the main obstacle to believing in Christianity was the good news. It seemed like a fairy tale, too good to be true. Today the main obstacle is the bad news: people just don't believe in sin, even though that's the only Christian doctrine that can be proven simply by reading daily newspapers.
Peter Kreeft, commenting on Romans,You Can Understand the Bible