Genesis 1 Authorized (King James) Version (AKJV)
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, and for seasons, and for days, and years: 15 and let them be for lights in the firmament of the heaven to give light upon the earth: and it was so. With all that is going on at the moment, it is interesting that we have a comet on the way that is potentially going to be about the brightest we have ever seen and may even be visible in the day sky. I'm not reading too much in to it but with the topic being Biblical it may be useful alongside the giving of the Law to bring non-believers to repentance.
https://www.spaceweather.com
The non-believers might scoff ..... but they won't be scoffing when much more serious events become evident in the sky at some future time.
Revelation 8 Authorized (King James) Version (AKJV)
8 And the second angel sounded, and as it were a great mountain burning with fire was cast into the sea: and the third part of the sea became blood; 9 and the third part of the creatures which were in the sea, and had life, died; and the third part of the ships were destroyed.
10 And the third angel sounded, and there fell a great star from heaven, burning as it were a lamp, and it fell upon the third part of the rivers, and upon the fountains of waters; 11 and the name of the star is called Wormwood: and the third part of the waters became wormwood; and many men died of the waters, because they were made bitter.