I channeled most of this information a while back.
That which is of the past is writ in stone, that which is of the present is writ in air, that which is of the future is writ in water, and that which is not of the past, present, or future is writ in the eternal flame.
The past is written in stone, or earth. It’s solid and stable, and for the most part can’t be changed (there are ways, but it’s very difficult to do). The past is ruled over by Saturn. Saturn is an agricultural god, but he’s the god of the seed that was sown that has now been harvested. He was also celebrated as the god of the golden age of Rome after that age had past.
The present is writ in air. Much of the present is solid and like the past it can’t be changed. The foundation of the situation is of the past and can’t be changed. But the present does allow for action to be taken to effect change, although within certain limitations. And so the present is written in air, moving and changing and able to swiftly change direction and change what has been written. The present is ruled over by Mars, who is a god of action.
The future is writ in water. Water moves and constantly changes itself, but in a passive way so that it fits whatever container it is put into. No true divination of the future can ever be made, because the future is not written within a something solid, and what is written is always in motion. Likewise the future can not be affected directly. Only the present can be affected, and what is done in the present changes the container of the future, thus changing what has been writ in water. The future is ruled by Luna, symbolized by the moon, a planet who’s form is based on what light is provided to it, and which constantly changes its shape.
And that which belongs to neither the past, present, nor future is writ in the eternal flame. These are the things that were, that are, and that will always be. The absolute truths of the universe. The element of fire is as much part of the physical plane as it is part of the spiritual planes. It encompasses all, as does absolute truth. Absolute truth has no beginning or end, nor is it ever in a given place, it just exists. Because absolute truth is forever, it is not written in fire which is temporary and fleeting, but in an eternal flame, and likewise is ruled over by Sol.
How does all of this tie into divination?
The past is written in stone and mostly unchangeable. It serves as the foundation of what is happening now, and our current circumstances are entirely dependent on the past. Therefore the past can be accurately divined.
Much of the present is also unchangeable. It is part of the past which has moved with such great momentum that there are limitations as to how far it can be altered. Divination of the present can be very accurate, although in the present freewill does exist, and although a probable course of actions can be determined, a person always has the ability to act in any manner they choose.
The future can’t be divined at all, only the probably future can be defined. One can look at the foundation of the past, and what is happening in the present, and determine the probable outcome of events. This skill can be developed to the point where a person is usually right. However no predestination exists, and there is always the possibility that what is seen in the future won’t occur.