42. Verse 21 And God created the great sea monsters, and every living creature that creeps, which the waters produced abundantly according to their kinds; and all winged birds according to their kinds; and God saw that it was good.

As has been stated, 'fish' means facts, here facts quickened and brought to life through faith from the Lord. 'Sea monsters' means those facts' general sources, below which and from which details derive. Nothing whatever exists in the universe that does not depend on some general source for its commencement and continuance. In the Prophets sea monsters or whales are mentioned several times, and in those places they mean those general sources of facts. Pharaoh, the king of Egypt, who represents human wisdom or intelligence - that is, knowledge in general - is called 'a great sea monster', as in Ezekiel,

Behold, I am against you, Pharaoh king of Egypt, the great monster lying in the midst of his ¹ rivers, who has said, It is my river and I have made myself. Ezekiel 29:3.

[2] And elsewhere in Ezekiel,

Raise a lamentation over Pharaoh, king of Egypt, and say to him, You are like a monster in the seas, and you have come forth in your rivers, and have troubled the waters with your feet. Ezekiel 32:2

These words mean people who wish to penetrate the mysteries that are part of faith by means of facts, and so from themselves. In Isaiah,

On that day Jehovah will make a visitation with His hard and great and strong sword upon Leviathan the full-length serpent, ² and upon Leviathan the twisting serpent, and He will slay the monsters that are in the sea. Isaiah 27:1.

'Slaying the monsters in the sea' means preventing people's knowing facts even in their general aspects. In Jeremiah,

Nebuchadnezzar king of Babel has devoured me, he has troubled me, he has made me an empty vessel, he has swallowed me up like a sea monster, he has filled his belly with my delicacies, he has cast me out. Jeremiah 51:34.

This stands for the fact that mankind did swallow cognitions of faith, which are 'the delicacies' here, just as the sea monster swallowed up Jonah. In that story the sea monster stands for people who treat general cognitions of faith as mere facts, and behave accordingly.

Footnotes:

Instead, spiritual reality is structured on the basis of spiritual state, or the loves and thoughts of angels. These loves and thoughts connect in chains of cause and effect, which angels experience much as we experience time. One thought flows into another on the spiritual level, and angels sense that progression the same way we sense the progression of one moment flowing into another. And when angels have thoughts and feelings that are similar, they experience a closeness that is very much the same as our experience of physical closeness; their idea of “space” is the variation in thoughts and affections held by spirits throughout the spiritual world.When the Bible describes something as “after” something else, then, the spiritual meaning has to do with the progression of spiritual states; it is a new spiritual state emerging from the one before it. And since higher states flow into lower states, the things coming “after” tend to be the lower, more external ones. For instance, the deep, internal desire to be good to others flows of its own accord into specific ideas of specific good things we can do. Those specific ideas, then, would be “after” the desire to be good.According to Swedenborg, time and space don’t exist in spiritual reality; they are purely natural things that exist only on the physical plane. This means that one spiritual thing can’t happen “after” another spiritual thing in time, because there is no time. And one spiritual thing can’t follow “after” another in space because there is no space.