, "Arthur C. Custance, who has written an excellent book in the theory's defense, traces it to the certain early Jewish writers,...who even put a 'rebhia' mark in the Masoretic text of the Old Testament to let the reader know there is a break in the narrative between v1 and v 2..
Here is Mr Custance's page on the Masoretic text. http://www.creationdays.dk/withoutformandvoid/Articles.php
Lets assume Mr. Custance is correct in saying there is a break (a length of real time) between v1 and v2..
1 In the beginning God created the heavens and the earth.
2 Now the earth was [a] formless and empty, darkness was over the surface of the deep, and the Spirit of God was hovering over the waters.
What I gather from this break would be that God said what He did, then He describes in better detail how He did it on a day-to-day basis.
Bottom line is this: if the "break" or any other time-adding theory takes away from the fact that Adam's sin originated death (as described in Romans 5), there is no consequence for sin (if death was already taking place), no need for a Savior to remove the punishment for sins and the Gospel of Jesus, in fact the entire Bible, is reduced to a "feel good" story.