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.

It is fitting that to “sojourn” in the Bible -- to live in a foreign land -- represents instruction, learning the things represented by that area. This is used quite a bit in the early parts of the Bible, when Abraham and his immediate descendants sojourned in a variety of foreign places. It arises also later in the Old Testament, with the Israelites given rules on how to treat sojourners in their midst.

The sojourner is a person who is willing to learn and accept new spiritual truths. That's in contrast to the term "stranger", as used in the Bible. A stranger has a natural inclination to good, but is not willing to learn spiritual truths. There is a long history of using travel to round out an education, from the 19th-century “world tours” taken by Oxford and Cambridge graduates to the exchange programs and semesters abroad offered in modern school programs. The idea is pretty straightforward: by immersing ourselves in other cultures we can both learn about them and deepen our minds.