In regular language, "mercy" means being caring and compassionate toward people in poor states. That's a position we are all in relative to the Lord, all the time. Without Him we would be unable to choose what is good; without Him we would be unable to formulate a reasonable thought. Without Him, in fact, we would instantly cease to exist; we have life only because He constantly gives us life. So we are, quite literally, at His mercy. Fortunately, the Lord is caring and compassionate to a degree we cannot fathom. He is the source of all caring and all compassion, and of love itself. His mercy toward us never lessens, never abates, never ends; His whole purpose is to bring each of us, individually, to heaven. The meaning of "mercy" in the Bible is closely tied to this idea: it represents love in a general sense, and the desire for good that comes from love. It can also represent the desire for good and the ideas that describe it when those thoughts and desires are inspired by love of the Lord.

Shepherds represent people who lead and teach others, using knowledge and true ideas to help people reach the goodness of life. This makes sense if you think about what a shepherd does. He makes sure the flock has good grass to eat; plants in the Bible represent facts and knowledge. The shepherd makes sure the flock has good water to drink; water represents true thinking about the spiritual aspect of day-to-day life. He carries weapons (a true understanding of spiritual things) to ward off predators (desires for evil) and keeps the flock safe. And the ultimate goal of the shepherd is for the flock to be useful, to do good, to provide good things, representing the good of life. There are, of course, a few cases in which shepherds are the bad guys (for instance, a group of them in Midian would chase Jethro's daughters away so they could water their sheep first; Moses found favor by helping the daughters and ended up marrying one of them). In these cases shepherds represent people who lead and teach without the good of life as the goal. When goodness is not the goal, ideas and knowledge are twisted into falsity and the teaching and leading trend toward evil. See also Sheep.