Some comments follow.
Of course, Glenn's harmonization suggests that it reaches back at least 5 million years. And all that dwell upon the earth shall worship him, whose names are not written in the book of life of the Lamb slain from the foundation of the world. But the heavens and the earth, which are now, by the same word are kept in store, reserved unto fire against the day of judgment and perdition of ungodly men. Something supernatural might occur. Clearly, the time span is hard to predict.