### Core Meaning & Semantic Range
The Hebrew word **kechâsh**, represented by `{{H3586}}`, is a term for **faithless** or **lying**. It appears only **1 time** in **1 unique verse**, making its single usage highly specific. The word derives from a root meaning to be faithless, indicating that it describes not just an act of deception, but a state of unfaithfulness.
### Biblical Occurrences & Contextual Analysis
The sole biblical use of `{{H3586}}` is found in [[Isaiah 30:9]], where the prophet describes the people of Israel. They are called a "rebellious people, **lying** children, children that will not hear the law of the LORD." In this context, the word is not used for a simple falsehood but is directly equated with a rebellious character and a willful refusal to obey divine instruction. It defines the people's core disposition toward God.
### Related Words & Concepts
Several related words from its single context in [[Isaiah 30:9]] help clarify its meaning:
* `{{H4805}}` **mᵉrîy** (rebellious): This word, meaning "rebellion," is used in the same verse to describe the people. It establishes that being "lying" `{{H3586}}` is an expression of a deeper, rebellious nature against God [[Isaiah 30:9]].
* `{{H1121}}` **bên** (son): Defined as "a son," this term is used for "children" in [[Isaiah 30:9]]. It frames the people's deception as a violation of their relationship with God, acting as unfaithful children rather than obedient sons. The identity of Israel as "sons of Jacob" is a recurring theme [[Malachi 3:6]].
* `{{H8085}}` **shâmaʻ** (to hear): This word implies hearing with attention and obedience. The "lying children" are specifically those who "will not **hear** the law of the LORD," linking their falsehood directly to a refusal to listen to and obey God's commands [[Isaiah 30:9]].
### Theological Significance
The theological weight of `{{H3586}}`, despite its rarity, is significant. It illustrates key aspects of sin and disobedience.
* **Rejection of Divine Law:** The word is explicitly tied to a refusal to "hear the law of the LORD" [[Isaiah 30:9]]. This frames lying not merely as a social misdeed but as an act of spiritual unfaithfulness and rejection of God's authority.
* **Symptom of Rebellion:** By being paired with "rebellious people" `{{H4805}}`, `kechâsh` is presented as a clear symptom of a heart in rebellion against God. The deception is an outward manifestation of an inward state of opposition.
* **Breach of Relationship:** The description of "lying **children**" `{{H1121}}` highlights that this behavior is a fundamental breach of the covenant relationship between God and His people, who are called to be His sons.
### Summary
In summary, `{{H3586}}` is more than a simple word for "lying." Its single, powerful appearance in scripture defines it as an attribute of rebellion and unfaithfulness toward God. It illustrates how deception is intrinsically linked to a refusal to hear and obey God's law, marking a profound break in the relationship between the Creator and His children.