When God restored the heavens and the earth, He spoke celestial bodies into being. These luminaries in the heavens had a specific purpose.
Genesis 1:14:
And God said, Let there be lights in the firmament of the heaven to divide the day from the night; and let them be for signs [Hebrew oth], and for seasons, and for days, and years.
Let’s see how these celestial signs agree with the prophecies of God’s promised Messiah, the Lord Jesus Christ.