8352. 'Saying, What shall we drink?' means that they cannot tolerate truths because, as a result of their lack of affection [for good], they find them unpleasant. This is clear from the meaning of 'drinking' as being taught truths and receiving them, and also as having an affection for them and consequently making them one's own, dealt with in 3069, 3168, 3772, 4017, 4018, but here as not being able to tolerate them because - as a result of the lack of affection for good, meant by 'the waters were bitter', according to the explanation above in 8349 - they are found to be unpleasant. This temptation consists in their complaining and their grief, because the truths which previously they have found pleasant, and which have thus constituted their spiritual life or the life of heaven for them, now seem unpleasant to them, so unpleasant that they can scarcely tolerate them.

[2] A merely natural person cannot believe that anything such as this could be a cause of grief. For he thinks, 'What difference does it make to me whether truths are pleasant or unpleasant? If they are unpleasant, let them be cast aside.' But a spiritual person has an entirely different feeling. Learning truths and being enlightened in the kinds of matters that belong to his soul and so to spiritual life is the delight of his life. Therefore when those truths are lacking, his spiritual life becomes a trial and burden to him; and this gives rise to grief and anguish. The reason is that the affection for good flows in unceasingly from the Lord by way of the internal man, arousing accordant things in the external man which have previously been the cause of delight belonging to an affection for truth; and when these things are under attack from the evils of self-love and love of the world, in which too the person has previously taken delight, a conflict of delights or affections results, which gives rise to anguish, and this in turn to grief and complaint.

[3] A brief statement needs to be made about the situation when temptation arises through lack of truth. Nourishment for spiritual life consists in goodness and truth, just as nourishment for natural life consists in food and drink. If good is lacking it is as if food is lacking; and when truth is lacking it is as if drink is lacking. The grief this causes is like the grief caused by hunger and thirst. This comparison arises from correspondence, for food corresponds to goodness, and drink to truth. This correspondence is also the reason why food and drink nourish the body better and more suitably if, during a dinner or a luncheon, the person has at the same time as he eats the pleasure of discussing with others the kinds of things he loves than if he sits at table alone without company. In the second situation the person's vessels for receiving food are narrowed, but in the first the same vessels are opened. These things are brought about by the correspondence of spiritual food and natural food. The reason for saying the pleasure of discussing with others the kinds of things he loves is that all that pleasure is related to goodness and truth; for there does not exist anything in the world that is unrelated to them both. What the person loves is related to the good present with him, and that which informs about good and so links itself to that good, is related to truth.

4018. 'In front of the flocks; and they came on heat as they came to drink' means even to the point of an intense desire in the affection for truth that a joining [to the goods and truths within the natural] might be effected. This is clear from the meaning of 'coming on heat as they came to drink' as an intense desire. The meaning of 'being on heat' as an intense desire is self-evident; and for the meaning of 'coming to drink' as the affection for truth, see immediately above in 4017. The reason why 'in front of the flocks' means that a joining to the truths and goods within the natural might be effected is that this phrase implies seeing and consequent arousal of affection, for this is the manner in which spiritual things are joined to a person. What is more, every implantation of truth or good in a person, as well as every joining of them to him, is effected by means of affection. The truths and goods which a person has learned but for which he has no affection do indeed enter the memory, but they are lodged there as insecurely as a feather on top of a wall which is blown off by the slightest puff of wind.

[2] As regards the things that enter the memory the position is this: Those for which there is no affection pass into the unlit parts of the memory when they enter it, whereas those for which there is affection pass into the light there. Things present in that light are seen and appear clearly and distinctly when any matter of a similar nature is brought up, but not so the things lying around in the unlit parts. Such is the effect that affection belonging to love has. From this it may be seen that all implanting of truth and joining of it to good is effected through affection; and the greater that affection, the stronger the tie joining the two together.

[3] The intense desire of the affection is in this case inmost affection. But truths are not capable of being implanted and joined to good except by means of affections for truth and good, which affections well up from charity towards the neighbour and love to the Lord as their sources. But evils and falsities are implanted by means of affections for evil and falsity, and these affections well up from self-love and love of the world as their sources. This being so, and the subject at this point in the internal sense being the joining of good and truth within the natural man, mention is therefore made here and in what follows of the flock being on heat when they came to drink, by which such considerations are meant.