Gen1:4 ‘He separated the light from darkness.’
Separation of light from darkness is seen from the standpoint of God the Son. For God the Father such distinctions as we make are pointless. What does the the psalmist say? ‘Even the darkness will not be dark to you; the night will shine like day, for darkness is as light unto you.(Ps.139:12)’
In order to understand the Bible we need to keep in mind what is the divine Will as revealed. The Bible serves as a commentary for us in a manner we can benefit from. Therefore how Holy Spirit works with a believer need not necessarily be the same for all. The word can convict us wherever we have deviated from his Will. The Book instructs and comforts us and in our dizzying whirl it may also strike a note of caution. In short the Word equips us in the paths of righteousness.
Separation of day and night as well as waters are to be understood thus as needful lessons for us.
Several passages make the distinction between children of light and children of this generation, children of darkness.(Mt.16:8, 2Thes.5:5) Needless to say this creative act of God has served a lesson ever since and when Jesus came into the world he could use the earthly time frame in order to teach the world of the eternal Will of God, the father.
The divine Will is clear: God is love. His love is all encompassing that not families,tribes or nations but the whole world may be saved. Within this Intent there is no dichotomy that splits nations or one man from another. Gentile nations are as much within it as Children of Israel. One need not forget the manner the seed of Abraham was sustained from the bounty of Egypt when there was a great famine in the land (Gen.46:3).God causes his sun to rise on the evil and the good.'(Mt.5:45) It is his nature. Jesus makes it clear that ‘it is not the will of your Father, who is in heaven, that one of these little one should perish(Mt.18:14).’
In citing the key verse where light is separated from darkness we need to see this emphasis is provided by God the Son and Holy Spirit counsels us to ‘ believe in the light(Jn.12:35-36) and is from the standpoint of the Son of Man.
The word being made flesh is his Will given a body. When he dwelt among sons of men he set an example how the will of his heavenly Father may be fulfilled. He showed the difference between children of light and children of wrath or disobedience. He showed such a separation was possible.