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.

4017. 'In the troughs of water where the flocks came to drink' means affections for truth. This is clear from the meaning of 'water' as cognitions and facts, which are the truths of the natural, dealt with in 28, 2702, 3058; from the meaning of 'troughs' or water-holders, which, since they are containers of water, in the internal sense mean the goods that go with truth, for these goods are the holders of truth, dealt with in 3095- and from the meaning of 'coming to drink' as the affection for truth. The reason why 'coming to drink' means the affection for truth is that it implies thirst, and 'thirst' in the Word means appetite and desire, and so the affection for knowing and taking in truth. It has this meaning because 'water' means truth in general. 'Hunger' however means appetite and desire, and so the affection for assimilating good. It does so because 'bread', which is used to denote food in general, 2165, means good. From this it is evident that these words mean affections for truth.