The Spiritual Betrothal is different: here the two persons are frequently separated, as is the case with union, for, although by union is meant the joining of two things into one, each of the two, as is a matter of common observation, can be separated and remain a thing by itself. This favour of the Lord passes quickly and afterwards the soul is deprived of that companionship -- I mean so far as it can understand. In this other favour of the Lord it is not so: the soul remains all the time in that centre with its God. We might say that union is as if the ends of two wax candles were joined so that the light they give is one: the wicks and the wax and the light are all one, yet afterwards the one candle can be perfectly well separated from the other and the candles become two again, or the wick may be withdrawn from the wax. But here it is like rain falling from the heavens into a river or a spring; there is nothing but water there and it is impossible to divide or separate the water belonging to the river from that which fell from the heavens. Or it is as if a tiny streamlet enters the sea, from which it will find no way of separating itself, or as if in a room there were two large windows through which the light streamed in: it enters in different places but it all becomes one.