[ravenwolf]

He repeated that phrase to set out his days of creation.

How could they be other than days from sun to sun?

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Yes, that works out fine until God rests on the seventh day and then says, in verse 4 these are the generations in which the heavens and the earth when they were created, in the day that God made the earth and the heavens.

So it took generations according to verse 4 but was counted as one day.

[boatbums]

Yes, that works out fine until God rests on the seventh day and then says, in verse 4 these are the generations in which the heavens and the earth when they were created, in the day that God made the earth and the heavens. So it took generations according to verse 4 but was counted as one day.

I don't think it does. The Hebrew word that you are reading translated as "generation" is a word that means an account, or a record or telling of the events and is translated that way in a number of Bible versions.

This is the account of the heavens and the earth when they were created, when the Lord God made the earth and the heavens. (Gen. 2:4 NIV)http://biblehub.com/genesis/2-4.htm

[Boogieman]

"So it took generations according to verse 4 but was counted as one day."

The word that is translated as "generations" in Genesis does not mean what you seem to think it means. It is not referring to an era of time. The word in question is "towlĕdah", which means:

I. descendants, results, proceedings, generations, genealogies

   A. account of men and their descendants

      i. genealogical list of one's descendants

      ii. one's contemporaries

      iii. course of history (of creation etc)

   B. begetting or account of heaven (metaph)

http://www.blueletterbible.org/lang/Lexicon/Lexicon.cfm?strongs=H8435&t=KJV