When Abraham was nearing the end of his life, he began to think about a wife for Isaac. Not wanting Isaac to marry a woman from Canaan, where they were living, he sent one of his servants to go look for a bride among his relatives in their homeland of Mesapotamia.
Once there - and undoubtedly with God's help - the servant immediately found Rebekah who agreed to return with him. Isaac and she were married soon after her arrival in Israel. Isaac was forty years old at the time.
Isaac brought her into the tent of his mother Sarah, and he married Rebekah. So she became his wife, and he loved her; and Isaac was comforted after his mother's death. (Genesis 24:67)
Soon after they got married, a famine took them to Gerar where, exhbiting a lack of faith that was astounding, Isaac told the men of the city that Rebekah was his sister, afraid that they would kill him to possess her if they knew she was his wife. [see Abimelech]
Eventually the marriage produced two children, Jacob and Esau. Though twins, they weren't identical, differing not on in appearance but in spirit. There was no love lost between the two brothers and it could very well been a result of the blatant favoritism engaged in by the parents.
Isaac loved Esau, but Rebekah loved Jacob. (Genesis 25:28)
Rebekah's love for Jacob resulted in a particularly devious act of deception when it was time for a dying Isaac to give his blessings. Traditionally given to the oldest son - who happened to be Esau, even by just a few minutes - Rebekah was determined that Jacob receive his blessings instead. While Esau was out hunting for the wild game that Isaac had asked for before giving his blessing, Rebekah had Jacob pass himself as Esau to his father to get his blessing.
Now, my son, listen carefully and do what I tell you: Go out to the flock and bring me two choice young goats, so I can prepare some tasty food for your father, just the way he likes it. Then take it to your father to eat, so that he may give you his blessing before he dies." (Genesis 25:8-10)
The deception - which also involved some disguise - worked. When Esau returned from the hunting trip, the truth was revealed, but it was too late. Even though it had been obtained by an unintended recipient through deception, the blessing could be not given twice. Furious, Esau decided to kill Jabob. Rebekah however heard about what Esau was planning, and sent Jacob to live with her brother Laban until Esau's fury had subsided. It was the last she ever saw of him as she died before his return many years later.
Rebekah was buried in the Cave of Machpelah in Hebron, where Abraham, Sarah, Isaac, Jacob and Leah were all buried.