According to the Septuagint (LXX), the total time from the creation of Adam to the Flood is 2242 years. This is different from the Masoretic Text (MT), which gives a timeline of 1656 years. The difference is primarily due to the ages of the patriarchs at the time of their son’s birth being higher in the LXX than in the MT, leading to a longer pre-Flood chronology. Here’s a comparison of the pre-Flood patriarchs’ ages at their first son’s birth according to the LXX:
| Patriarch | Age at Son’s Birth (LXX) | Age at Son’s Birth (MT) |
|---|---|---|
| Adam | 230 | 130 |
| Seth | 205 | 105 |
| Enosh | 190 | 90 |
| Kenan | 170 | 70 |
| Mahalalel | 165 | 65 |
| Jared | 162 | 62 |
| Enoch | 165 | 65 |
| Methuselah | 187 | 187 |
| Lamech | 188 | 182 |
| Noah | 500 | 500 |
| Total (to Flood) | 2242 years | 1656 years |