491. Comparisons can be drawn to illustrate the propositions that God bestowed freedom, not only on every human being, but also on every animal, and indeed an analogous faculty even on inanimate objects, giving each the power to receive it according to its nature; and that God intends good to all, but this is turned into evil by the objects upon which it acts. The atmosphere enables everyone to breathe, and likewise every animal and wild beast, every bird, the owl as much as the dove; it also enables birds to fly. Yet the atmosphere is not to blame for the opportunity given to creatures of contrary nature and character. The ocean affords in itself a home and provides food for every fish; but it is not to blame for one fish swallowing another, or for the crocodile turning its food into poison to kill people. The sun provides light and heat for all, but the objects it acts upon, the various plants on earth, receive them in different ways; a good tree or shrub does so in one way, a thorn or briar in another, and a harmless plant in a different way from a poisonous one.

[2] Rain from the upper levels of the atmosphere falls to the ground everywhere, and the ground supplies water from this source to every tree, plant and grass, each of which uses the water to serve its own needs. This is what is meant by the faculty analogous to free will: the plants freely suck up the water through their openings, pores and passages, which in warm weather stand open, and the earth merely provides moisture and elements, which the plants take up in a manner reminiscent of thirst and hunger. It is much the same with people. The Lord flows in to provide every person with spiritual heat, which is in essence the good of love, and with spiritual light, which is in essence the truth of wisdom. But the way the person receives these depends upon which way he turns, whether to God or to himself. That is why the Lord says where He teaches us about love towards the neighbour:

So that you may be sons of the Father, who makes the sun rise on the wicked and on the good, and sends rain on the righteous and the unrighteous, Matthew 5:45.

And in another passage He speaks of Him desiring the salvation of all.

A "field" in the Bible usually represents the Lord's church, and more specifically the desire for good within the church. It's where good things start, take root, and grow. When you have a desire to be a good person and to do good things, the natural first questions are "What does that mean?", "What should I do?", "What can I do?". You look for ideas, concepts, direction. Once you figure out something you want to do or a change you want to make in yourself, you seek specific knowledge. If you want to volunteer at a food pantry, say, you'd need to know whom to call, when they need help, where to go, what to bring. Armed with that knowhow, you're ready to get to work. That process could be compared to food production. You start with a field -- which is that desire to be good. Then you plant seeds -- those ideas and concepts. Those seeds sprout into plants -- the specific facts and knowledge needed for the task (easily seen in the food pantry example, but also true with deeper tasks like "being more tolerant of my co-workers" or "taking more time for prayer," or "consciously being a more loving spouse"). Finally, those plants produce food -- the actual good thing that you go and do. The Writings also say that in a number of cases a "field" represents the doctrine, or teachings, of the church. This sounds markedly different. The desire for good is emotional, a drive, a wanting; doctrine is a set of ideas. But for a church to be true, its doctrine must be centered on a desire for good, and must lead people toward doing what is good. So sound doctrine is actually closely bound up with the desire for good.