The book in the bible that I always love to back is the creation.
Genesis 1:14 Then God said, “Let there be lights in the firmament of the heavens to divide the day from the night; and let them be for signs and ◊ seasons, and for days and years;
In the beginning God would always want us to become aware of the times and seasons. I believe He gave us something to look forward to and that is to have fellowship with Him, and to become more aware of His presence for all times and seasons. In hebrew, “seasons” means “appointed time” MO’ED. The books of Moses frequently refer to the tent of “meeting”.