Genesis 1:18

¹⁸ And to rule over the day and over the night, and to divide the light from the darkness: and God saw that it was good.

Genesis 9:6

⁶ Whoso sheddeth man's blood, by man shall his blood be shed: for in the image of God made he man.

In Isaiah 30:22, this signifies being unclean from the lusts of falsities or to be discarded as the worship of the Lord replaces the worship of idols. (Apocalypse Explained 587, Apocalypse Revealed 459)