I recently heard this quote in a sermon by Spencer DeBurgh, which I strongly recommend you listen to if you have the time. You can find it here. I like this quote as it seems to speak directly to the question of should we "redo" church, evangelism, and ultimately Christianity.
"Woe to him therefore, who preaches Christianity without the possibility of offense. Woe to the person who smoothly, flirtatiously, commendingly, convincingly preaches some soft, sweet something which is supposed to be Christianity!
Woe to the person who makes miracles reasonable. Woe to the person who betrays and and breaks the mystery of faith, distorts it into public wisdom, because he takes away the possibility of offense! Woe to the person who speaks of the mystery of the Atonement without detecting in it anything of the possibility of offense."