What would happen to evangelism if we thought about it by considering evangelism in the Reformation? That is the question that shapes a brilliant but short chapter in David C. Steinmetz, Taking the Long View.
To begin with, we'd think about evangelism in the Bible, the heart of the Reformation.
The issue for Luther was indulgences, which meant the doctrine of penitence, which meant repentance. Right there is where Steinmetz camps out. Here is his summary and I have added numbers: