One place they did this was in Seder Olam Zutta, a later, shorter version of the Seder Olam Rabbah, a 2nd-century CE rabbinic text that attempts to chronicle history from creation to the Roman period. , shall we?

Seder Olam Zutta gives us a meticulously calculated chronology. It all starts after the Flood. According to this text, it was 340 years from the Flood to the Dispersion of Nations. From the birth of Abraham to that same dispersion? Forty-eight years. Add it all up, and that’s 1,996 years from Creation.

Then, from the Dispersion to the birth of Isaac, we have another 52 years. That brings us to 2,048 years since Creation. Abraham, our father, lived to be 175 years old, a good long life!

Isaac lived for 60 years until Jacob was born, adding up to 2,108 years from Creation. He lived a total of 180 years. Jacob then lived 87 years until Judah was born – that’s 2,195 years from Creation, and Jacob’s total lifespan was 147 years.

Judah lived 33 years until Peretz was born, which brings us to 2,228 years from Creation. He lived 119 years. Peretz lived until Hezron was born (eight years) and Hamul (nine years). Twenty-two years passed from the time Joseph was sold into slavery until the descent into Egypt. Hezron and Hamul went down to Egypt, so this is now 2,238 years from Creation.

Jacob lived 84 years until Reuben was born. Reuben’s total lifespan was 124 years, and he died two years after Joseph in Egypt. Simeon lived 120 years and died one year after Joseph. Levi lived a good long life of 137 years. Judah lived 119 years, passing away 18 years before Levi. Issachar lived 122 years and died 15 years before Levi. Zebulun lived 124 years and died 11 years after Joseph.

We're not done yet, are we?

Dan lived 127 years. Naphtali lived 133 years. Gad lived 125 years. Asher lived 126 years. Joseph himself lived 110 years. Benjamin lived 111 years and died 15 years before Levi.

Then the text traces a genealogy. Hezron fathered Ram. Ram fathered Amminadab. Amminadab fathered Nahshon. And Nahshon, he was one of those who went out of Egypt.

According to Seder Olam Zutta, it was the year 2,848 from Creation when they left Egypt. And in that very year, in the second month (Iyar), the Israelites were given some portions of the Torah at Marah to study: the Shabbat, the red heifer (parah adumah), and other laws. And in that same year, in the third month (Sivan), the Israelites received the Ten Commandments at Mount Sinai!

In the second year after the Exodus, the Torah was given in its entirety on Yom Kippur, the Day of Atonement. And in that very year, Nahshon died. Nahshon fathered Salmon. Salmon was one of those who entered the land of Israel. Salmon fathered Boaz (yes, that Boaz from the Book of Ruth!).

Finally, in the forty-first year since the children of Israel left Egypt – which is 2,889 years from Creation, if you're keeping track! – the Israelites entered the land. Joshua ben Nun died at the age of 110. That's 2,916 years from Creation.

And then, the text concludes, "These are ten generations."

What does all this mean? Well, it's a testament to the human desire to understand our place in the vast sweep of time. These calculations, while perhaps not historically precise by modern standards, reveal a profound need to connect with the past, to anchor ourselves in a narrative that stretches back to the very beginning. It's a reminder that we are part of something much larger than ourselves, a story that continues to unfold. What role will we play in the ongoing story of generations?