St. Augustine also comments on the word “day” in the creation week, admitting the interpretation is difficult:
“But simultaneously with time the world was made, if in the world’s creation change and motion were created, as seems evident from the order of the first six or seven days. For in these days the morning and evening are counted, until, on the sixth day, all things which God then made were finished, and on the seventh the rest of God was mysteriously and sublimely signalized. What kind of days these were it is extremely difficult, or perhaps impossible for us to conceive, and how much more to say!” (City of God, Book 11: Chapt. 6).
Scripture trumps anything Augustine or anyone else has opined about Scripture.
You just seem so heck-bent to want to find anything that allows you to reject the biblical account of creation.
And as far as evolution is concerned, why limit God into having to use it? Evolution limits God, he can’t get us to where he wants us without it?