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)

2131. People who are admitted are received by angelic communities with inmost charity and its joy, and they are shown all love and friendship. But when they are no longer content to remain in the communities they have come to first, they are received by other communities, and this process is repeated again and again until they reach that community with which they accord so far as the life of mutual love with them is concerned, There they remain until, having become more perfect, they leave, and from there are raised and lifted up into greater happiness, which in the Lord's mercy happens to them to the extent that the life of love and charity which they have received in the world exists with them. But their transference from one community to another is never a matter of their being rejected by the community where they are. It takes place because they themselves wish to go, a wish that is in accordance with an urgent desire instilled in them by the Lord. And because that transference is in keeping with their desires there is nothing which is not done in freedom.