Leviticus 18:9
The nakedness of thy sister, the daughter of thy father, or daughter of thy mother, whether she be born at home, or born abroad, even their nakedness thou shalt not uncover.
Cross-reference
Leviticus 20:17
Parallel
Leviticus 20:17 repeats the prohibition from Leviticus 18:9 and adds the penalty for incest with a sister.
Deuteronomy 27:22
Parallel
Deuteronomy 27:22 echoes Leviticus 18:9 by pronouncing a curse on the act of sleeping with a sister.
2 Samuel 13:11–14
Allusion
2 Samuel 13:11-14 recounts Amnon raping his half-sister Tamar, directly violating the prohibition in Leviticus 18:9.
2 Samuel 13:4
Allusion
2 Samuel 13:4 reveals Amnon's incestuous desire for his half-sister Tamar, setting up the violation of Leviticus 18:9.
2 Samuel 13:12
Allusion
2 Samuel 13:12 has Tamar appeal to the same standard as Leviticus 18:9, calling incest a wicked thing not done in Israel.