What era did Job live in?

The very first thing I need to establish is the historical background of Job. To start writing, I must first set up various contexts, such as the historical background and the zeitgeist of that era, so that I can flesh out the story with more depth. Rather than looking into other Jewish traditions or the appendix traditions of the Septuagint, I decided to trace Job's footsteps biblically. Instead of searching through the physical Bible myself, I left the search to AI. However, the name 'Job' was nowhere to be found outside the Book of Job, and the only person with a somewhat similar name was 'Jobab', a descendant of Esau.(Genesis 36:15-19) And even this came with the caveat that it was written in the traditions of the Septuagint, which I had been trying to ignore. Setting everything else aside, the fact that the land of Edom is geographically close to the land of Uz might be persuasive. However, since Edom and Uz are distinctly different lands, I concluded that Jobab is not Job, reasoning that God would have no reason to intentionally insert false information.

After a day of thought, I decided to read the Book of Job again from beginning to end. When I finished reading it for almost two days, I discovered that Job lived for another 140 years even after suffering his hardship. This means Job was at least 140+α years old. This leads to the conclusion that if I calculate Job's age before his hardships, I can roughly figure out how old he was when he lived and died. However, Job chapter 1 does not state his age. While pondering this again, I thought that if I knew at what age Job had his children, I could narrow the gap. Naturally, the text does not tell us when Job had his children. But seeing that Job offered burnt offerings for his children after a feast, I thought it was clear that he was a figure from the Patriarchal age. If he belonged to the Patriarchal age, he was either a contemporary of Abraham or from the generation above him.

I checked the ages of everyone from Noah's son Shem to Abraham, as well as when they had their firstborns. I was able to discover an amazing fact. From Shem to Abraham, lifespans decrease exponentially. Shem was 600 years old, Arphaxad 438... Terah 205, and Abraham 175. In other words, you can see a drastic decrease in lifespans. That is the fulfillment of God's promise after Noah's flood to limit our lifespans to 120 years. Looking at this alone, it is clear that Job is at least a figure from Abraham's era.

Job had 10 children, including 7 sons, and it is said that those sons each had their own homes. This means at least the 7 sons were already married. When I calculated the average age at which people had children at that time—excluding Shem who had his first child at 100, and Terah and Abraham who had children at 70 and 100 respectively—I could confirm that there was a culture of having children in their early 30s. I could estimate that if Job had a child every year starting from age 30, his last child would have been born when he was 37. After that, 18 years passed until they got married, which allowed me to confirm that the absolute lowest estimate for Job's lifespan would be 195 years.

But I didn't give up here and checked the genealogy a bit further. I wanted to know the age gap between the first and second children from Shem to Terah. What I could confirm from this was that it could be inferred from the ages of Terah's three sons. At first, because it says Terah had Abram, Nahor, and Haran at age 70, I thought they were born year after year (Genesis 11:26). However, when Terah died in the land of Haran at 205 years old (Genesis 11:32), Abraham's age was 75 (Genesis 12:4). This means Terah had Abraham at age 130. And if he had Haran at 70 and Abraham at 130, the birth gap is a whopping 60 years. Looking at Genesis 11:26, the order in which Terah had his children is written as Abraham, Nahor, and Haran. I interpreted this to mean there is a high probability that Abraham was the youngest. If so, it means he had a child once every 30 years in total. Calculating it that way, Job raised his children until he was 318, suffered his hardships, and then lived another 140 years.

Job's lifespan is thus estimated to be 458 years. An age like this implies that Job was of the level of the eldest son or eldest grandson of Uz, the master of the land of Uz.

One more interesting fact is that if you convert Job's age into letters using Hebrew gematria (Just as Reformed theology strictly cautions against it, I absolutely do not recommend gematria, but...)

ח (Chet): 8

ת (Tav): 400

ן (Nun): 50

and surprisingly, this word becomes

Chatan (חָתָן), which means "bridegroom, husband"

Job's name is Iyov (אִיּוֹב), which means "one who is treated as an enemy." Jesus Christ is the Bridegroom of the church, yet He is one who is treated as an enemy. I simply set out on a journey to find the historical background of Job, but even within that journey, I was able to meet Jesus Christ our Lord. While this may just be a personal hypothesis—or even pure speculation—to establish the historical background for the project, for me personally, it was a graceful time all my that allowed me to reaffirm that every story in the Bible is indeed the story of Jesus Christ.