### Core Meaning & Semantic Range
The Greek word **mesiteúō**, represented by `{{G3315}}`, means to interpose as an arbiter or, by implication, to ratify as a surety, and is translated as **confirm**. It appears **1 time** across **1 unique verse** in the Bible, making its single usage highly specific and significant.
### Biblical Occurrences & Contextual Analysis
The sole appearance of `{{G3315}}` is in [[Hebrews 6:17]]. In this passage, the word describes God's action to provide an absolute guarantee for His promise. The verse states that God, being **willing** `{{G1014}}` to show the **immutability** `{{G276}}` of His **counsel** `{{G1012}}` to the **heirs** `{{G2818}}` of **promise** `{{G1860}}`, **confirmed** it with an **oath** `{{G3727}}`. This act of confirming serves as a definitive ratification of His unchangeable purpose.
### Related Words & Concepts
Several related words from its context help clarify the meaning of God's confirmation:
* `{{G3727}}` **hórkos** (oath): This is the instrument by which God confirms His promise. It is defined as a sacred restraint or oath. Its power is seen when even an earthly king feels bound to act for his **oath's sake** [[Matthew 14:9]].
* `{{G1860}}` **epangelía** (promise): This is the object of the confirmation. It is an announcement or a divine assurance of good. Believers are sealed with the Holy Spirit of **promise** [[Ephesians 1:13]], tying God's pledge to His very presence.
* `{{G1012}}` **boulḗ** (counsel): This refers to God's will or purpose that is being confirmed. The word signifies a determined plan, such as when Christ was delivered by the determinate **counsel** of God [[Acts 2:23]].
### Theological Significance
The theological weight of `{{G3315}}` is centered on the nature of God's covenantal faithfulness.
* **Divine Ratification:** The word signifies God's deliberate act to interpose on behalf of His own promise, providing a binding guarantee. By confirming His counsel with an **oath** `{{G3727}}`, He adds a second immutable thing to His word [[Hebrews 6:18]].
* **Assurance for the Heirs:** This act of confirmation is performed for the benefit of the "heirs of promise," demonstrating **more abundantly** `{{G4054}}` the unchangeable nature of His plan [[Hebrews 6:17]]. It is designed to give strong consolation and hope.
* **Unchangeable Purpose:** The use of `{{G3315}}` underscores that God's **counsel** `{{G1012}}` is not only certain but is also shown to be certain. The confirmation is an outward display of an internal and eternal reality.
### Summary
In summary, while `{{G3315}}` is used only once, its role is pivotal. It articulates the ultimate act of divine assurance, where God **confirms** His own promise to leave no room for doubt. Occurring in [[Hebrews 6:17]], it reveals a God who not only makes promises but also intervenes to ratify them, securing the hope of all who are heirs to His unchangeable counsel.
TRV