Genesis 26:35

These two women brought a lot of grief to his parents, Isaac and Rebekah.

Genesis 6:2

The sons of God saw that the daughters of men were beautiful. They married any of them they chose.

Genesis 27:46-2

Rebekah said to Isaac: I cannot stand Hittite women! I would rather die than see Jacob marry one of them.

Genesis 28:8

It was clear to Esau that his father despised the local Canaanite women.

Treasury of Scripture Knowledge

Summary

Which were a grief of mind unto Isaac and to Rebekah.

General references

Bible References

Which

Genesis 6:2
The sons of God saw that the daughters of men were beautiful. They married any of them they chose.
Genesis 27:46
Rebekah said to Isaac: I cannot stand Hittite women! I would rather die than see Jacob marry one of them.
Genesis 28:1
Isaac called Jacob, blessed him, and told him: Do not marry a Canaanite.

General references

Genesis 34:9
Let us make an agreement that there will be intermarriage between our people and yours.