And there was evening and there was morning, the second day. — Genesis 1:8
The meanings of evening, morning, and day are explained above at verse 5.
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.
from Secrets of Heaven, Volume 1, Section 26