35 Which were a grief  of mind unto Isaac and to Rebekah.
35 They were a source of grief to Isaac and Rebekah.
35 and they made life bitter
35 They turned out to be thorns in the sides of Isaac and Rebekah.
35 And they were a grief of mind to Isaac and Rebekah.
35 But Esau's wives made life miserable for Isaac and Rebekah.
Matthew Henry's Commentary on Genesis 26:35
Commentary on Genesis 26:34-35
(Read Genesis 26:34-35)
Esau was foolish in marrying two wives together, and still more in marrying Canaanites, strangers to the blessing of Abraham, and subject to the curse of Noah. It grieved his parents that he married without their advice and consent. It grieved them that he married among those who had no religion. Children have little reason to expect God's blessing who do that which is a grief of mind to good parents.