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)

Our feet are the lowest parts of our bodies, and they're very useful! In the Bible, feet represent the lowest and most utilitarian part of our spiritual selves -- the “natural” level. This everyday aspect of life is involved with routine tasks and demands and the thoughts associated with them. It's not terribly deep or introspective, but it is useful -- just like feet. This correspondence is true of the Lord and of church communities, too. The Lord's Divine Natural leads us through relatively simple obedience (think of the Ten Commandments). Churches, too, have a natural level on which they serve their communities in simple but tangible ways.