It is something like fire working on wood; the heat draws out all the moisture, the greenness and the heaviness. It grows warm, begins to glow, becomes more like the fire itself. As the wood slowly takes on the likeness of fire, the dissimilarity between the two grows less until finally, in a rapid movement, the fire takes from the wood its own substance; the wood becomes fire and loses at the same time its separateness and inequality, since it has become fire. No longer merely like fire, it has become one substance with the fire. Likeness is lost in union.

Sermons - From Our Daily Bread