23. Nothing is more common in the Word than for the word 'day' to be used to mean the particular time at which events take place, as in Isaiah,

The day of Jehovah is near. Behold, the day of Jehovah comes. I will make heaven tremble, and the earth will be shaken out of its place, on the day of My fierce anger. Its time is close at hand, and its days will not be prolonged. Isaiah 13:6, 9, 13, 22.

And in the same prophet,

Her antiquity is in the days of antiquity. On that day Tyre will be forgotten for seventy years, like the days of one king. Isaiah 23:7, 15.

Since 'day' stands for the particular time it also stands for the state associated with that particular time, as in Jeremiah, Woe to us, for the day has declined, for the shadows of evening have lengthened! Jeremiah 6:4

And in the same prophet,

If you break My covenant that is for the day and My covenant that is for the night, so that there is neither daytime nor night at their appointed time. Jeremiah 33:20, 25.

Also,

Renew our days as of old. Lamentations 5:21.

Fear of the unknown and fear of change are both common ideas and together cover a broad spectrum of the fears we tend to have in natural life. In a sense, they also lie behind the spiritual meaning when people are described as being "afraid" in the Bible. In Swedenborg's works, people are described as being afraid when a more higher spiritual state comes into communication with a lower, more external state and demonstrates the need for the lower state to be reformed and elevated. That's the case with the shepherds in the Christmas story, reacting first with fear when angels came to tell them of a whole new spiritual era. It's true of Moses at the burning bush, Jacob after the vision of the ladder, even the disciples seeing Jesus walking on the Sea of Galilee – all cases in which a higher state was reaching out to them and asking them to embrace a new phase of spiritual life. This also holds in a more negative sense, when states of evil and false thinking come into contact with spiritual things and feel threatened by the revelation of their own wretchedness. The Bible also speaks frequently of people fearing God, a related but different idea which is covered elsewhere.

In Genesis 3:10; 18:15, Exodus 3:6, being afraid signifies apprehension lest one offend or be hurt. (Arcana Coelestia 223-224, Arcana Coelestia 2215, Arcana Coelestia 6849)