Shared ground
These verses report a simple set of facts: at age forty Esau marries two women, Judith and Basemath, both identified as Hittites, and the result is deep grief for Isaac and Rebekah (their “spirits,” meaning their inner life, not just a passing annoyance). The narration does not describe a ceremony, motives, or conversations; it highlights the household impact.
In the larger story flow, this note comes after a period of outward stability for Isaac and just before the blessing conflict in Genesis 27. It functions like a brief but pointed explanation of tension already building inside the family.
Where interpretation differs
What exactly caused the grief. Some readers think the main issue is religious loyalty: marrying women from the surrounding peoples threatened the family’s distinctive worship and identity. Others think the grief is more relational and practical: bringing two new family systems into one household created conflict and strain, especially given expectations about kinship and inheritance.
Who “they” refers to. The pronoun can be heard as pointing to the two wives personally (“they grieved…”), or more broadly to the marriages and what they introduced into the family (“this situation grieved…”). Either way, the text’s emphasis is on the effect on Isaac and Rebekah.
Why the disagreement exists
The passage gives results (“grief”) without giving reasons. It also uses a broad people-label (“Hittite”) and a brief pronoun (“they”) without explanation. Because the narrator does not spell out whether the pain is primarily spiritual, cultural, or interpersonal, interpreters weigh clues from Genesis’s wider pattern (family identity, marriage choices, and covenant concerns) differently.
What this passage clearly contributes
Explicitly, it shows that Esau’s marriages to two Hittite women are a turning point inside Isaac’s household: the parents experience profound distress. By inference, it also prepares readers for the coming family conflict by showing that the future of the family line is already emotionally and relationally strained before the blessing episode (Genesis 27:1–4).