So, I was looking in Irenaeus (an early Church Father) for the answer to my questions about creation, evolution, and everything. Instead, I find that he probably started the "Left Behind" series.
Check this out:
For in as many days as this world was made, in so many thousand years shall it be concluded.
And for this reason the Scripture says: “Thus the heaven and the earth were finished, and all their adornment. And God brought to a conclusion upon the sixth day the works that He had made; and God rested upon the seventh day from all His works.” This is an account of the things formerly created, as also it is a prophecy of what is to come. For the day of the Lord is as a thousand years; and in six days created things were completed: it is evident, therefore, that they will come to an end at the sixth thousand year.
How crazy is that! Ol' LaHaye wasn't so original now was he?