Leupold Genesis part 64 verse 31

31. And God saw all that He had made and behold it was very good. Then came evening, then came morning--the sixth day.

The writer says with emphasis that no imperfection inhered in the work God had wrought up till this point: For after all preceding statements to the effect that individual works were good comes this stronger statement to the effect that it was "very good," making a total of seven times that the word is used--seven being the mark of divine operation. The thought that God might be the author of evil and imperfection must be guarded against most strenuously (Strack). The "behold" moves the expression "very good" prominently into the foreground (K. S. 341V). Kol before 'asher lies on the borderline between partitive genitive and appositional genitive (K. S. 337 h). "The Sixth" has the article with the numeral for the first time (G. K. 126 w), meaning: "the sixth day,'" that last memorable creative day of God.

The next three verses had best be taken as the conclusion of the summary creation account of the first chapter, because the record of this account cannot be complete till all of the seven days have passed in review. More appropriate would have been the chapter division at 2:4.