### Core Meaning & Semantic Range
The Greek word **aischrótēs**, represented by `{{G151}}`, refers to **shamefulness, i.e. obscenity:--filthiness**. It appears only **1 times** across **1 unique verses** in the Bible, making its single appearance highly specific in its meaning and application. The term is derived from αἰσχρός, carrying a strong sense of indecency.
### Biblical Occurrences & Contextual Analysis
The sole use of `{{G151}}` is in [[Ephesians 5:4]], where it is listed among behaviors that are improper for believers. The verse reads, "Neither **filthiness**, nor foolish talking, nor jesting, which are not convenient: but rather giving of thanks" [[Ephesians 5:4]]. In this context, `{{G151}}` is presented as a form of communication or conduct that is shameful and obscene, standing in direct opposition to the speech that should characterize a follower of Christ.
### Related Words & Concepts
Several related words in its immediate context clarify the meaning of `{{G151}}`:
* `{{G3473}}` **mōrología** (silly talk, i.e. buffoonery:--foolish talking): This word appears alongside `{{G151}}` to describe a category of speech that is inappropriate. It refers to the kind of talk that is moronic or absurd [[Ephesians 5:4]].
* `{{G2160}}` **eutrapelía** (witticism, i.e. (in a vulgar sense) ribaldry:--jesting): Also listed in the same prohibition, this term points to coarse or vulgar jesting, which is considered "not convenient" [[Ephesians 5:4]].
* `{{G2169}}` **eucharistía** (gratitude; actively, grateful language (to God, as an act of worship):--thankfulness, (giving of) thanks(-giving)): This word is presented as the proper alternative to the forbidden behaviors. Instead of filthiness or foolish talk, believers are called to engage in giving thanks [[Ephesians 5:4]].
### Theological Significance
The theological significance of `{{G151}}` is concentrated in its single appearance, which establishes a clear standard for Christian conduct.
* **Prohibition of Obscene Speech:** The word `{{G151}}` is part of a direct command to avoid not only obscene actions but also shameful and filthy language. These forms of communication are explicitly labeled as "not convenient" `{{G433}}`, meaning they are not proper or fitting for a believer [[Ephesians 5:4]].
* **The Positive Alternative:** The passage does not simply forbid negative behavior but provides a positive replacement. The alternative to **filthiness** `{{G151}}` and its related vices is **giving of thanks** `{{G2169}}`. This frames gratitude as the speech that ought to fill the life of a Christian.
* **Defining Christian Character:** The condemnation of `{{G151}}` helps to define the moral and ethical boundaries of the Christian life. The call to abandon such behavior is a call to a transformed life that reflects a new nature in Christ.
### Summary
In summary, `{{G151}}` is a highly specific term for obscenity and shamefulness. Its singular mention in scripture occurs within a list of prohibited verbal conduct in [[Ephesians 5:4]]. The word serves to mark a clear distinction between the "filthiness" of the world and the "giving of thanks" that should characterize the speech of a believer. It highlights the principle that a person's words are a critical indicator of their spiritual state.