The God of Abraham, The God of Isaac, and the God of Jacob

Jacob was 120 when his father Isaac died. How old was Isaac when his father Abraham died?

Here is a clear, precise breakdown:

1️⃣ Jacob was 120 when Isaac died (Gen 35:28-29)

Isaac died at 180 years old (Genesis 35:28).

Thus:

> If Jacob was 120 when Isaac (180) died,

Jacob was born when Isaac was years old (Genesis 25:26, consistent).

2️⃣ Isaac’s age when Abraham died:

Abraham died at 175 years old (Genesis 25:7).

Isaac was born when Abraham was 100 years old (Genesis 21:5).

Thus:

> At Abraham’s death (175), Isaac’s age = years old.

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✅ Summary Table:

Event Reference Age

Abraham dies Gen 25:7 175

Isaac’s age at Abraham’s death Computed 75

Isaac dies Gen 35:28-29 180

Jacob’s age at Isaac’s death Computed 120

Here is a clear, organized timeline chart for Abraham, Isaac, and Jacob to help you see how their ages align:

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🌿 Patriarchal Timeline Chart

Event Age of Abraham Age of Isaac Age of Jacob Scripture

Abraham is born 0 - - Gen 11:26

Isaac is born 100 0 - Gen 21:5

Jacob is born 160 60 0 Gen 25:26

Abraham dies (age 175) 175 (dies) 75 15 Gen 25:7

Isaac dies (age 180) - 180 (dies) 120 Gen 35:28

Jacob moves to Egypt (age 130) - - 130 Gen 47:9

Jacob dies (age 147) - - 147 (dies) Gen 47:28

🪐 Key Observations:

✅ Abraham (175) and Isaac (75):

Isaac was 75 years old when Abraham died.

✅ Jacob (15) at Abraham’s death:

Jacob was 15 years old when Abraham died (since Jacob was born when Abraham was 160).

✅ Isaac (180) and Jacob (120):

Jacob was 120 years old when Isaac died at 180.

✅ Jacob moves to Egypt at 130, dies at 147.

📖 Why it matters:

Shows God’s covenant faithfulness across generations.

Illustrates overlapping lifespans: Abraham, Isaac, and Jacob all alive together for 15 years.

Helps you track covenant promises from Abraham (Gen 12) to Jacob’s family (Gen 46-47).