### Core Meaning & Semantic Range
The Greek word **klydōnízomai**, represented by `{{G2831}}`, means to surge or fluctuate. It appears **1 time** in **1 verse** in the Bible and is used figuratively to mean being **tossed to and fro**.
### Biblical Occurrences & Contextual Analysis
The sole use of `{{G2831}}` is in [[Ephesians 4:14]], where it illustrates spiritual instability. The passage urges believers that they should "**be** no more **children**" (`{{G3516}}`), who are "**tossed to and fro**" and "**carried about with** every **wind** of **doctrine**" (`{{G4064}}`, `{{G417}}`, `{{G1319}}`). This state of fluctuation is attributed to the "**sleight** of **men**" (`{{G2940}}`, `{{G444}}`) and their "**cunning craftiness**" (`{{G3834}}`) used to **deceive** (`{{G4106}}`).
### Related Words & Concepts
Several related words in the same passage clarify the meaning of being "tossed to and fro":
* `{{G3516}}` **nḗpios** (an infant... an immature Christian): This word directly links the state of being tossed about with spiritual immaturity or being like a **child** [[Ephesians 4:14]].
* `{{G4064}}` **periphérō** (to convey around, i.e. transport hither and thither): Used alongside `{{G2831}}`, it reinforces the image of being passively moved and lacking stability, as in being "**carried about**" by winds of doctrine [[Ephesians 4:14]].
* `{{G1319}}` **didaskalía** (instruction... doctrine, learning, teaching): This identifies the source of the instability. It is not a random force, but shifting and deceptive **doctrine** that causes believers to be tossed about [[Ephesians 4:14]].
### Theological Significance
The theological weight of `{{G2831}}` is found in its powerful metaphorical use.
* **Spiritual Immaturity:** The word is a direct warning against remaining like a **child** (`{{G3516}}`) in faith, susceptible to every new idea. The goal is to move beyond this state so that believers "**be no more**" tossed about [[Ephesians 4:14]].
* **The Danger of Deceptive Teaching:** The "tossing" is caused by the "**wind** of **doctrine**" (`{{G417}}`, `{{G1319}}`), which originates from human trickery (`{{G2940}}`) and **craftiness** (`{{G3834}}`) with the intent to **deceive** (`{{G4106}}`).
* **The Call to Stability:** The verse uses `{{G2831}}` to describe a negative state that believers are meant to grow out of. The purpose (`{{G2443}}`) is for believers to no longer be tossed to and fro, but to achieve steadfastness [[Ephesians 4:14]].
### Summary
In summary, `{{G2831}}` **klydōnízomai** provides a vivid and concise image of spiritual instability. Though used only once, it serves as a crucial warning against the dangers of immaturity and susceptibility to false **doctrine** (`{{G1319}}`). It contrasts the unsteadiness of a child tossed by waves with the stability that is the goal of the Christian faith, urging believers to stand firm against human **craftiness** (`{{G3834}}`) and **deceit** (`{{G4106}}`).