Forbidden to have sexual relations with one’s father’s wife’s daughter (a paternal half-sister).
This mitzvah prohibits sexual relations with the daughter of one’s father’s wife if she is also one’s sister through the father. Although related through a stepmother, the Torah explicitly states this prohibition to emphasize the severity of incestuous relationships. This command strengthens the broader laws of arayot (forbidden relations) and ensures the sanctity of the family unit.
Commentary & Classical Explanation:
Represents the concept of spiritual intentionality, purity, and sanctity—set apart for a higher purpose.
Signifies awe and reverence toward Hashem—living with awareness of His greatness and presence.
Mitzvot that define and deepen the relationship between a person and their Creator. These include commandments involving belief, prayer, Shabbat, festivals, sacrifices, and personal holiness — acts rooted in divine connection rather than human interaction.
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