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)

468. A tree means man, as is proved by the following passages in the Word:

All the trees of the countryside shall know that I, Jehovah, will lay low the tall tree, and raise up the low tree; and I will wither the green tree and make the dry tree sprout, Ezekiel 17:24.

Blessed is he whose pleasure is in the law; he shall be like a tree planted near streams of water, which shall give fruit at its proper time, Psalms 1:2-3; Jeremiah 17:8.

Praise Jehovah, fruit-trees, Psalms 148:9.

Jehovah's trees are fully watered. Ps. 'Psalm 104:16.

The axe lies at the root of the tree; every tree which does not produce good fruit will be cut out, Matthew 3:10; 7:16-21.

Either make the tree good and its fruit good, or make the tree rotten [and its fruit rotten]; for by its fruit the tree is known, Matthew 12:33; Luke 6:43-44.

I shall light a fire which will consume every green tree and every dry tree, Ezekiel 20:47.

It was because a tree means man, that it was commanded that the fruit of a tree used for food in the land of Canaan should be accounted uncircumcised (Leviticus 19:23-24). Since an olive-tree means a man of the celestial church, it is said of the two witnesses who were prophesying, that they were two olive-trees standing close by the God of the whole earth (Revelation 11:4; similarly Zechariah 4:3, 11-12). Also, in David's Psalms:

I am like a flourishing olive-tree in the house of God. Psalms 52[:8].

Also, in Jeremiah:

A flourishing olive-tree with fair fruit has Jehovah called your name, Jeremiah 11:16-17.

There are many other passages, too numerous to quote here.