The events surrounding Augustus’s coming to power are […] ‘good news’, euangelia, a word virtually always in the plural in such contexts, though, interestingly, always in the singular in the New Testament. This ‘good news’ is not merely a nice piece of information to cheer you up on a bad day, but the public, dramatic announcement that something has happened through which the world has changed for ever and much for the better.

— N. T. Wright, Paul and the Faithfulness of God