What does the Bible say about how to handle a sibling rivalry?: "Answer: Sibling rivalry goes back to nearly the beginning of time, starting with the first two brothers mentioned in Scripture, Cain and Abel. We find other sibling rivals in the Bible, including Ishmael and Isaac, Esau and Jacob, Leah and Rachel, Joseph and his brothers, and Abimelech and his brothers. In each case, the sibling rivalry led to one or both siblings taking ill-advised, sinful action."
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