### Core Meaning & Semantic Range
The Hebrew word **kâsâh**, represented by `{{H3780}}`, is a primitive root meaning **to grow fat (i.e. be covered with flesh); be covered**. It is a very specific term, appearing just **1 time** in **1 unique verse** in the entire Bible. Its singular use provides a powerful, focused image.
### Biblical Occurrences & Contextual Analysis
The sole appearance of `{{H3780}}` is in [[Deuteronomy 32:15]], a passage describing Israel (under the poetic name Jeshurun) in a state of rebellion born from prosperity. The verse states that after Jeshurun had "waxen fat" and "grown thick," he was "**covered**" with fatness. This physical state of being excessively well-fed and "covered" is immediately followed by the spiritual consequence: "then he forsook God which made him, and lightly esteemed the Rock of his salvation" [[Deuteronomy 32:15]].
### Related Words & Concepts
In its only context, `{{H3780}}` is used alongside other words that amplify its meaning of excessive abundance:
* `{{H8080}}` **shâman**: This primitive root means to **become (make, wax) fat**. It is used twice in [[Deuteronomy 32:15]] to describe Jeshurun, emphasizing the process of becoming fat before he is described as being "covered."
* `{{H5666}}` **ʻâbâh**: This root means to **be (grow) thick(-er)**. It appears in the same verse, where Jeshurun is described as having "grown thick," contributing to the overall picture of extreme physical prosperity [[Deuteronomy 32:15]].
### Theological Significance
The theological significance of `{{H3780}}` is tied directly to its singular, impactful use in scripture.
* **A Metaphor for Prosperity's Danger:** The word serves as part of a vivid depiction of excessive material blessing. Being "covered" symbolizes a state where physical abundance obscures spiritual vision.
* **The Link Between Physical State and Spiritual Choice:** Its use in [[Deuteronomy 32:15]] creates a direct causal link between the state of being "covered" in fatness and the act of forsaking God.
* **A Warning Against Complacency:** The term functions as a powerful warning that unchecked prosperity, without gratitude to the divine source, can lead to pride, rebellion, and a rejection of the God who provides.
### Summary
In summary, `{{H3780}}` is a rare but potent Hebrew word. Its single use in [[Deuteronomy 32:15]] defines its entire meaning within the biblical text. It vividly portrays the concept of being "covered" in physical blessing to the point of spiritual ruin, serving as a timeless warning against the kind of prosperity that leads one to forget the source of salvation.