One thing about darkness is, with just a simple spark, the way can be lighted, even if just for a step or two, if we are willing to trust in the light itself and trust that the path it will illuminate for us, just one bit at a time, is one that will lead us to growth, strength, and eventually perfection. That is the sentiment of "Lead, Kindly Light," that when trials come, the pain of death separates us from loved ones, or it is just plain dark, there will come a brighter time, even a gloriously happy and brighter time, filled with knowledge, reunions, and strength earned and given through struggle.
This piano solo was adapted from its original vocal/piano improvisation (it was also the basis for combining this with two other songs about His light, which will be released shortly).  Follow that kindly Light!