128. The worldly and bodily-minded man says at heart, Unless I am taught about faith and about things that belong to faith by means of sensory evidence so that I see for myself, that is, by facts so that I understand for myself, I am not going to believe. And he confirms himself in this attitude from the consideration that natural phenomena cannot be at variance with spiritual. Consequently it is from sensory evidence that he wishes to learn about heavenly and Divine matters. But this is no more possible than for a camel to pass through the eye of a needle. The more he wants by this method to become wise, the more he blinds himself, until in the end he believes nothing, not even in the existence of anything spiritual or in eternal life. This arises out of the basic assumption he makes. This is eating from the tree of the knowledge of good and evil. And the more he eats of it, the more dead does he become. But the person who wishes to be made wise not from the world but from the Lord says at heart that he must believe the Lord, that is, those things the Lord has spoken in the Word, because they are truths. This is the basic assumption of his thinking. He confirms himself by means of rational, factual, sensory, and natural evidence. And things that are not confirmatory he sets aside.

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.