In Leviticus 11:7 and Matthew 7:6, this signifies filthy loves of those in the hells of adulterers. (Apocalypse Explained 1044[4]) Swine signify people who love only worldly riches. (Apocalypse Revealed 727)

In Isaiah 65:4, this signifies appropriation of infernal evils. (Apocalypse Explained 659[2]) 'Swine' or 'hogs' correspond to the life of greed and its delight.

(References: Arcana Coelestia 1742)

5579. 'When they had finished eating the corn' means when there deficiency of truths. This is clear from the meaning of 'the corn' as truth, dealt with in 5276, 5280, 5292, 5402 - the fact that there was a deficiency of such truth being meant by 'they had finished eating it'. The situation in the spiritual world is that those there satisfy their hunger with truths and forms of good; for they constitute the food for those there, 5576. But once that food has served its purpose those people enter a further state of dearth. It is like the nourishing of a person with material food, in that once this food has served its purpose that person feels hungry again. This kind of hunger, which is a dearth of spiritual things, is eveningtime for those in the spiritual world, or the darkest part of their day; but this is followed by twilight and morning. Those there pass through alternating phases Like these. They enter that eveningtime or state of spiritual hunger to the end that they may long for and have a desire for truths and forms of good, which are more nutritious when they are hungry for them, even as material food is for someone who is famished. From this one may see what is meant by a dearth of spiritual things when there was a deficiency of truths.