Seeing with his prophetic eye that the seed of Jacob would once be compelled to go into exile, Isaac offered up one more petition, that God would bring the exiles back again. He said, "He shall deliver thee in six troubles, and in the seventh there shall no evil touch thee." And also Rebekah prayed to God in behalf of Jacob: "O Lord of the world, let not the purpose prosper which Esau harbors against Jacob. Put a bridle upon him, that he accomplish not all he wills to do."[117] When Esau observed that even his father's love had passed from him to Jacob, he went away, to Ishmael, and he addressed him as follows: "Lo, as thy father gave all his possessions to thy brother Isaac, and dismissed thee with empty hands, so my father purposeth to do to me. Make thyself ready then, go forth and slay thy brother, and I will slay mine, and then we two shall divide the whole world between us." And Ishmael replied: "Why dost thou want me to slay thy father? thou canst do it thyself." Esau said: "It hath happened aforetime that a man killed his brother—Cain murdered Abel. But that a son should kill his father is unheard of." Esau did not really shrink back from parricide, only it chanced not to fit the plan he had hatched. "If Ishmael slays my father," he said to himself, "I am the rightful redeemer, and I shall kill Ishmael to avenge my father, and if, then, I murder Jacob, too, everything will belong to me, as the heir of my father and my uncle."[118] This shows that Esau's marriage with Mahalath, the daughter of Ishmael and grandchild of Abraham, was not concluded out of regard for his parents, who were opposed to his two other wives, daughters of the Canaanites. All he desired was to enter into amicable relations with Ishmael in order to execute his devilish plan.[119] But Esau reckoned without his host. The night before his wedding with Mahalath Ishmael died, and Nebaioth, the son of Ishmael, stepped into his father's place, and gave away his sister.[120] How little it had been in Esau's mind to make his parents happy by taking a granddaughter of Abraham to wife, appears from the fact that he kept his two other wives, the Canaanitish women. The daughter of Ishmael followed the example of her companions, and thus she but added to the grief caused the parents of Esau by their daughters-in-law.[121] And the opportunity might have been a most favorable one for Esau to turn aside from his godless ways and amend his conduct, for the bridegroom is pardoned on his wedding day for all his sins committed in years gone by.[122]