Spiritual light has no need for the sun or the moon, because it comes from a spiritual being.
QUOTE
Revelation 21:
23 And the city had no need of the sun, neither of the moon, to shine in it: for the glory of God did lighten it, and the Lamb is the light thereof.
24 And the nations of them which are saved shall walk in the light of it: and the kings of the earth do bring their glory and honour into it.
25 And the gates of it shall not be shut at all by day: for there shall be no night there.
God's light cannot have darkness.
QUOTE
1 John 1:
5 This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.
Being that it was the glory of God that shined upon the earth, cast no shadows, was the reason the first light had to be divided.
QUOTE
Genesis 1:
3 And God said, Let there be light: and there was light.
4 And God saw the light, that it was good: and God divided the light from the darkness.
And when God's light was divided, the first day now come into the picture.
QUOTE
Genesis 1:
5 And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day.
But can the light that shines from God sustain life?
QUOTE
Revelation 21:
24 And the nations of them which are saved shall walk in the light of it: and the kings of the earth do bring their glory and honour into it.
Added:And God set the bounderies for what a day will contain on the very first day. For is there any other time frame, that is known, that also contains these 4 parts of a day?
Genesis 1:
5 And God called the light Day, and the darkness he called Night. And the evening and the morning were the first day. The reason the four parts of the day are not really listed in order is that God see's in 4d, and can also see through solid objects (like seeing into our hearts). Because of this, He often refers to His creation from it's center point (the very center of the created object). God also likes to make references to opposites. Day being opposite of night, and evening being opposite of morning.