Figure 2 · The Key of 23 in Action

A cumulative span opens a 430–215–430 pattern

Hold the Exodus at 1446 BC while the 989-year input expands backward.

Cumulative source2435 BC

Abraham · Moses/Nisan line

Held fixed1446 BC

Exodus

2435 − 1446 = 989
989 × 25/23 = 1075
1446 + 1075 = 2521 BC

The source is cumulative Abraham, not his ordinary 2166 BC birth. The earlier head moves back by 86 years.

2521 BC

Generated head

2091 BC

Abraham’s Call

1876 BC

Jacob enters Egypt

1446 BC

Exodus

430 years215 years430 years

430 + 215 + 430 = 1075

One regular setting for the internal dates2091 and 1876 use normal MT chronology with 430 years in Egypt. The 2521 head is generated; it is not a new biography date.
2435 BC is cumulative Abraham on the Moses/Nisan line. The generated 2521 BC head frames 430 + 215 + 430 years through regular Call and Entry dates.

Sources: File 22 §§5.2–5.4: 989 expansion and chiasm · File 18 §6A: cumulative Abraham; §2.3: regular Call and Entry.

Full table and explanation · Introductory article

Model and calculation details

Cumulative Abraham 2435 BC to fixed Exodus 1446 BC gives 989. Multiplication by 25/23 produces 1075, an 86-year increase; 1446 + 1075 gives the generated 2521 BC head. Its partition is 2521 → 2091 → 1876 → 1446 BC = 430 + 215 + 430. The internal 2091 Call and 1876 entry of Jacob both use the normal regular MT full 430-year Egypt setting.2435 is not ordinary Abraham birth 2166.2521 is a generated comparison head, not an independently dated biography.

Static image alternativeFirst stage: cumulative Abraham 2435 BC to fixed Exodus 1446 BC is 989; multiplication by 25/23 gives 1075 and moves the earlier endpoint backward 86 years to generated 2521 BC. Second stage: 2521 to 2091 Abraham Call to 1876 Jacob entry to 1446 Exodus divides into 430, 215, 430 years. The regular internal dates use the normal full 430-year Egypt setting; 2435 is a cumulative coordinate.

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