The Danish theologian Søren Kierkegaard understands this. He likens the good news of Christianity to a razor–sharp knife — one that can wound as easily as it can help, that must be handled with the utmost caution:

I wonder if a man handing another man an extremely sharp, polished, two–edged instrument would hand it over with the air, gestures and expression of one delivering a bouquet of flowers. Would this not be madness? What does one do, then? Convinced of the excellence of the dangerous instrument, one recommends it unreservedly, to be sure, but in such a way that in a certain sense one warns against it. So it is with Christianity. (Works of Love, trans. Howard and Edna Hong. Harper & Row, 1938, 191)