נִדָּה

properly, rejection; by implication, impurity, especially personal (menstruation) or moral (idolatry, incest)

Definition

נִדָּה (niddâh) fundamentally means 'separation' or 'impurity,' originating from the idea of being cast out or rejected. In its primary, ritual sense, it refers to the state of menstrual impurity, which rendered a woman temporarily set apart from normal social and religious activities, as detailed in Leviticus 15:19-33. The word also extends to a powerful metaphorical sense, describing the profound moral impurity of idolatry and detestable practices, such as in Ezekiel 36:17, where the land is defiled by the people's conduct. This dual usage connects physical, ritual law with profound spiritual principles.

Biblical Usage

The word appears 24 times, predominantly in the legal texts of Leviticus (e.g., Leviticus 12:2, 5; 15:19-33) where it defines the laws of ritual purity concerning menstruation and childbirth. In the Prophets, it is used metaphorically for moral defilement, especially idolatry. For example, Lamentations 1:17 speaks of Jerusalem as a 'niddah' among the nations, and Ezekiel uses it repeatedly (e.g., Ezekiel 7:19-20; 36:17) to describe the spiritual pollution that led to exile. The usage shifts from a specific ritual term to a broad symbol of sin requiring cleansing.

Etymology

Derived from the root נָדַד (nādad, H5074), meaning 'to flee,' 'to depart,' or 'to wander.' This root conveys the core idea of separation or being cast away. נִדָּה is a noun form that developed to signify the state or condition of being separated, specifically due to impurity. Cognates in other Semitic languages carry similar meanings of menstruation or exclusion, highlighting the shared cultural concept of ritual separation.

Semantic Range

This word is theologically significant as it bridges the concepts of ritual and moral purity in the Old Testament. It illustrates how physical laws (like those in Leviticus) served as tangible object lessons for spiritual realities—sin separates humanity from a holy God. The prophets' use of niddah for idolatry shows that God views sin not merely as a legal infraction but as a defiling corruption. Understanding this enriches reading by revealing the depth of God's call to holiness and the need for purification, ultimately pointing forward to the cleansing found in Christ.

In ancient Israelite culture, a woman in a state of niddah was considered ritually unclean for seven days (Leviticus 15:19). This was not a statement about sin or personal worth, but a part of a comprehensive purity system that governed access to the sacred. It involved temporary physical separation and required ritual washing. This concept of separation for impurity was a common cultural framework in the ancient Near East, but Israel's system was uniquely tied to their covenant relationship with Yahweh, teaching them about holiness in all areas of life.

טָמֵא (ṭāmē', H2931) — A broader term for 'unclean' or 'defiled,' covering a wide range of ritual impurities, while niddah is a specific type. עֶרְוָה (ʿerwâ, H6172) — Often translated 'nakedness' or 'shame,' it refers to improper sexual relations and is closely associated with the moral defilement described by niddah (e.g., Leviticus 18:19-20).

Word Details

Scripture References