Genesis 26:35

Overview - Genesis 26
Isaac, because of famine, sojourns in Gerar, and the Lord instructs and blesses him.
He is reproved by Abimelech for denying his wife.
12 He grows rich, and the Philistines envy his prosperity.
18 He digs Esek, Sitnah, and Rehoboth.
23 God appears to him at Beer-sheba, and blesses him; and Abimelech makes a covenant with him.
34 Esau's wives.
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Genesis 26:35  (King James Version)
Which were a grief of mind unto Isaac and to Rebekah.

6:2 27:46 Genesis 28:1 Genesis 28:2 Genesis 28:8

grief of mind
Hebrew bitterness of spirit.