### Core Meaning & Semantic Range
The Greek word **ἐπιδιατάσσομαι (epidiatássomai)**, represented by `{{G1928}}`, means **to add to** or supplement. It appears only **1 time** in **1 unique verse** in the Bible. Its base definition, "to appoint besides, i.e. supplement (as a codicil)," points to the specific act of making an addition to an already existing and established agreement.
### Biblical Occurrences & Contextual Analysis
The sole biblical context for `{{G1928}}` is [[Galatians 3:15]]. Here, the writer speaks "after the manner of men" to create an analogy. The verse explains that once a man's **covenant** `{{G1242}}` is **confirmed** `{{G2964}}`, no one can legally disannul it or **add thereto**. The use of `{{G1928}}` in this passage serves to illustrate the binding and unalterable nature of a ratified agreement, using a common human legal concept to make a theological point.
### Related Words & Concepts
Several related words from its single context illuminate its meaning:
* `{{G1242}}` **diathḗkē** (covenant): The foundational agreement that cannot be added to. Defined as a "contract (especially a devisory will)," it is the object of the actions in [[Galatians 3:15]] and a key concept throughout scripture, as with the "new **covenant**" [[Hebrews 8:8]].
* `{{G2964}}` **kyróō** (confirm): Meaning "to make authoritative, i.e. ratify," this is the action that finalizes the covenant. Once a covenant is confirmed, it is protected from being added to [[Galatians 3:15]].
* `{{G114}}` **athetéō** (disannul): Used in direct opposition to `{{G1928}}` in [[Galatians 3:15]], this word means "to set aside... neutralize or violate." It represents the act of nullifying an agreement, which, like adding to it, is forbidden once confirmed.
### Theological Significance
The theological weight of `{{G1928}}` is tied entirely to its use as a legal illustration.
* **Finality of a Covenant:** The word's primary function is to underscore the finality of a confirmed agreement. In the argument presented in [[Galatians 3:15]], it establishes that a ratified covenant is closed to any further supplementation.
* **Human Analogy for Divine Truth:** By using this term in the context of what men do, the passage draws a parallel to the unchangeable nature of God's promises. If even a human covenant is protected from being added to, so much more is God's.
* **Legal Inviolability:** Paired with "disannulleth" `{{G114}}`, "addeth thereto" `{{G1928}}` completes the picture of legal inviolability. A confirmed covenant cannot be diminished or expanded upon, making it a powerful metaphor for divine faithfulness.
### Summary
In summary, `{{G1928}}` is a highly specific term meaning **to add to** or supplement an existing agreement. Its single appearance in [[Galatians 3:15]] is crucial, where it provides the legal language needed to build an argument about the unchangeable nature of a **confirmed** `{{G2964}}` **covenant** `{{G1242}}`. It demonstrates how a precise word from human affairs can be used to illustrate the absolute reliability of a divine promise.
TRV