The Book of Genesis in the Bible contains several examples of sibling rivalry: the story of Cain and Abel tells of one brother's jealousy after God appears to favour his sibling, and the jealousy ultimately leads to murder. Esau was jealous of his brother Jacob's inheritance and blessing; sisters Leah and Rachel compete for the love of Jacob; Joseph's brothers are so jealous that they effectively sell him into slavery. The following are also present in the Qur'an and the Torah.