[DallasMike]

IE..find the writers that refer/quote back to Genesis 1-12 and see if they took at as Plainly written...if you do you will find even Jesus and NT writers, quotes it as plain TRUTH, not only that but a foundation for his purpose and an example by which the Jews set up their work week.

Can you show me one instance where a Biblical writer said something on the order that each day of creation was a literal 24-hour day? The problem (for the Young Earth Creationists, anyway) is that you can't.

[flevit]

Exodus 20: 8-11

8 "Remember the Sabbath day by keeping it holy. 9 Six days you shall labor and do all your work, 10 but the seventh day is a Sabbath to the LORD your God. On it you shall not do any work, neither you, nor your son or daughter, nor your manservant or maidservant, nor your animals, nor the alien within your gates. 11 For in six days the LORD made the heavens and the earth, the sea, and all that is in them, but he rested on the seventh day. Therefore the LORD blessed the Sabbath day and made it holy.

[JohnnyM]

"each day of creation was a literal 24-hour day"

This is overwhelmingly the case in Genesis 1.

Each of these days has a morning and an evening.
Each of these days is numbered.
Exodus refers to these days as literal 24 hour days.
The Sun and the moon were made to govern these days.

When day is used as a period of time, such as "in my father's day" it never has a morning or evening. It is never numbered and the context and sentence structure is entirely different than what is used in Genesis.

The days in Genesis are 24 hour days.

JM