Charles Ellicott Commentary Genesis 27:42

"And the words of Esau her elder son were told to Rebekah. And she sent and called Jacob her younger son, and said unto him, Behold, thy brother Esau, as touching thee, doth comfort himself, [purposing] to kill thee." — Genesis 27:42 (ASV)

These words of Esau. —Though spoken “in his heart,” Esau had evidently made no secret of his evil purpose, and Rebekah therefore determines to send Jacob to her father’s house, not merely for safety, but that he might take a wife from among his own kindred. He was now formally acknowledged as the heir of the birthright and of the promises made to Abraham, and must therefore conform to the principle laid down in his own father’s case, and marry into the family of Nahor. “She sends, therefore, and calls him” to her tent, and takes secret counsel with him; and Jacob consents to take this distant journey. Thus, the separation of mother and son, and long and painful travel, are the immediate result of their scheming.