### Core Meaning & Semantic Range
The Greek word **eikē**, represented by `{{G1500}}`, means idly, without reason, or without effect. Derived from a word suggesting failure, it is translated as "without a cause" or "in vain." It appears **7 times** across **6 unique verses**, highlighting actions, beliefs, or emotions that are pointless or lack a valid basis.
### Biblical Occurrences & Contextual Analysis
In scripture, `{{G1500}}` is used to convey a lack of purpose or a negative outcome. In the Sermon on the Mount, it describes anger directed at a brother "**without a cause**" as being subject to judgment [[Matthew 5:22]]. Paul uses it to warn that belief can be "**in vain**" if believers do not hold fast to the gospel they received [[1 Corinthians 15:2]]. Similarly, he expresses fear that his labor for the Galatians might be "**in vain**" and that their suffering could also be "**in vain**" if they turn from the truth ([[Galatians 4:11]], [[Galatians 3:4]]). In contrast, the word is used to affirm the purpose of governing authorities, stating that an official "beareth not the sword **in vain**" [[Romans 13:4]].
### Related Words & Concepts
Several related words help clarify the contexts in which something can be done "in vain":
* `{{G3710}}` **orgízō** (to provoke or enrage): This word for being angry is directly linked to `{{G1500}}` to describe an emotion that is baseless or without a just cause [[Matthew 5:22]]. Scripture cautions believers, "Be ye angry, and sin not" [[Ephesians 4:26]].
* `{{G4100}}` **pisteúō** (to have faith): This term for belief can be rendered ineffective or "in vain" if not held with perseverance. True faith is meant to be effectual, as whoever believes in the Son will have everlasting life [[John 3:16]].
* `{{G2872}}` **kopiáō** (to work hard): This word for labor or toil can be for nothing if its foundation is wrong. Paul feared his work among the Galatians was "**in vain**" [[Galatians 4:11]], yet he also affirmed that by God's grace, his own extensive labor was not in vain [[1 Corinthians 15:10]].
### Theological Significance
The theological weight of `{{G1500}}` serves as a critical warning against spiritual emptiness.
* **Warning Against Empty Faith:** The word underscores that belief, suffering, and ministry can be rendered pointless. Faith is not merely a one-time decision but a steadfast commitment, and abandoning the core of the gospel makes prior belief "**in vain**" ([[1 Corinthians 15:2]], [[Galatians 3:4]]).
* **Condemnation of Baseless Emotion:** Its use in [[Matthew 5:22]] elevates spiritual accountability to our internal state, showing that anger "**without a cause**" is a serious offense before God.
* **Rejection of Vain Religion:** `{{G1500}}` is used to condemn religious practices rooted in human pride. One can be "**vainly** puffed up" by a "fleshly mind" through empty rituals and man-made humility, which have no real value [[Colossians 2:18]].
* **Affirmation of Divine Purpose:** By stating that civil authority does *not* bear the sword "**in vain**," the word implicitly affirms that God's ordained structures have a real and effective purpose, specifically to execute wrath on evildoers [[Romans 13:4]].
### Summary
In summary, `{{G1500}}` is a crucial term that contrasts purpose with pointlessness. It warns that faith, emotion, and labor can all become futile if they are not grounded in the truth and purpose of God. From condemning unjustified anger to cautioning against an empty belief, **eikē** challenges believers to ensure their spiritual lives are not "in vain" but are instead substantive, reasoned, and effectual.
TRV