The answer is: Isaac

Gen 26:6-7 - Abraham did exactly the same thing in Gerar, but God hadn't told him to remain in Gerar as he did with Isaac.

In the story of Isaac and Abimelech found in Genesis 26, we see a striking family pattern: Isaac, much like his father Abraham before him, deflects suspicion by claiming his wife Rebekah is just his sister. This twists the truth and puts Rebekah at risk, echoing plans that backfired for Abraham. It’s a remarkable snapshot of human nature—fear leading to deception, seemingly resorting to old tricks in intense situations.

Interestingly, both father and son repeat this identical strategy while both were in the same location of Gerar, outside their homeland. This gives us something fun to chew on: Isn’t it curious how certain patterns or traits in families show up through generations? Just as Isaac modeled himself after Abraham, today’s families might find episodes where characteristics get passed down, even with the best intentions.

Additionally, God’s intervention in both these incidents reflects a divine concern for protecting the innocent among the layers of human faults. In Isaac's case, God even sends a dream to Abimelech, warning him to steer clear of deception (if not all the hiccups). This can signal a powerful direction—the proponents of moral fortitude are not alone. When faced with tricky choices, many teachings (and historical figures like these) prompt us to seek truth, even in adversity. It’s in these stories that our understandings about both morality and kinship get troubly tested and nurtured through faith and lessons learned. Wouldn't it be captivating to imagine what Rebekah thought about her husband's choice?