And there was evening and there was morning, the first day.
From this we now see what evening and morning mean. Evening is every preliminary stage, because such stages are marked by shadow, or by falsity and an absence of faith. Morning is all later stages, because these are marked by light, or by truth and religious knowledge.
Evening stands in general for everything that is our own, while morning stands for everything of the Lord’s. As David says, for example:
The Spirit of Jehovah has spoken in me and his words are on my tongue. The God of Israel has said, the rock of Israel has spoken to me. He is like the morning light when the sun rises, like a morning when there are no clouds, when because of the brightness, because of the rain, the tender grass springs from the earth. (2 Samuel 23:2, 3, 4)
Since evening is when there is no faith and morning is when there is faith, the Lord’s coming into the world is called morning. The period in which he came, being a time of no faith, is called evening. In Daniel:
The Holy One said to me, “Up till [the day’s second] evening, when it becomes morning, two thousand and three hundred times.” (Daniel 8:14, 26)
Morning in the Word is similarly taken to mean every coming of the Lord, so that it is a word for being created anew.
Nothing is more common in the Word than for a day to be understood as meaning the times, as in Isaiah:
The day of Jehovah is near. Look—the day of Jehovah is coming! I will shake heaven, and the earth will tremble right out of its place, on the day when my anger blazes up. The time of his coming is near, and its days will not be postponed. (Isaiah 13:6, 9, 13, 22)
In the same prophet:
In the days of old she was old. It will happen on that day that Tyre will be forgotten for seventy years, corresponding to the days of one king. (Isaiah 23:7, 15)
Because a day stands for a time period, it is also taken to mean the state we are in during that period, as in Jeremiah:
Doom to us! For the day has faded, for the shadows of evening have lengthened. (Jeremiah 6:4)
In the same prophet:
If you nullify my compact with the day and my compact with the night, so that there is no daytime or night at their times . . . (Jeremiah 33:20, 25)
Renew our days as in ancient times. (Lamentations 5:21)
from Regeneration, Pages 126-128