The answer is: 26

(Genesis ... Revelation) - (Genesis 7:12) = (66) - (40) = 26

So, let's break this down a bit and have some fun exploring these numbers from a Biblical perspective! We know the Bible has 66 books: 39 in the Old Testament and 27 in the New Testament. These books are packed with stories, poetry, and deep teachings that have inspired countless generations.

Now, when we look at the 40 days and nights of rain that flooded the earth during Noah's time, as described in Genesis 7:12, it’s a huge part of Biblical history. This story is full of symbolism—Noah building the ark can be seen as faith in action, showing what it looks like to trust in a larger plan during chaotic times. Plus, if you think about it, that watermark of 40 has significance throughout the Bible! Remember, the Israelites wandered for 40 years in the desert, Jesus fasted for 40 days, and so on.

So when we take those 66 books and subtract the rain from Noah’s flood, arriving at 26, we might just smile at how cleverly our numbers relate Biblical facts and stories! This exercise doesn't just challenge our math skills but nudges us to contemplate the explorations of faith and fundamentals within those 66 incredible volumes. Speaking of which, have you ever wondered why New Testament writings seem to resonate more in light of Old Testament tales? Let’s just say, every page and every passage counts deeply in these stories of our shared past.