### Core Meaning & Semantic Range
The Greek word **mía**, represented by `{{G3391}}`, serves as the feminine term for **one** or **first**. It appears 79 times across 70 unique verses, signifying its importance in conveying concepts of singularity, unity, and temporal priority. Its usage ranges from identifying a single object to describing a profound, unified state.
### Biblical Occurrences & Contextual Analysis
In the biblical narrative, `{{G3391}}` is used in several key contexts. It establishes spiritual unity among believers, who are described as having "one heart" and "one soul" [[Acts 4:32]] and are called to strive together with "one mind" [[Philippians 1:27]]. The word is also central to the concept of marriage, where two individuals become "one flesh" [[Matthew 19:5]]. Furthermore, it frequently marks temporal beginnings, most notably in the recurring phrase "the first day of the week," which is associated with the resurrection and the gathering of disciples ([[Matthew 28:1]], [[Acts 20:7]]).
### Related Words & Concepts
Several related words expand upon the concepts of oneness and sequence:
* `{{G1520}}` **heîs** (one): As the primary masculine form for "one," it is a direct counterpart to `{{G3391}}` and is used to express singular identity or unity.
* `{{G1417}}` **dýo** (two): This numeral for "two" often appears in contrast to `{{G3391}}`, such as when "they twain" become "one flesh" in marriage [[Matthew 19:5]].
* `{{G1208}}` **deúteros** (second): This ordinal number provides sequential context and is used in conjunction with `{{G3391}}` to establish order, as in the instruction regarding "the first and second admonition" [[Titus 3:10]].
### Theological Significance
The theological weight of `{{G3391}}` is significant. It underpins several core doctrines of the Christian faith.
* **Unity of the Church:** The word is foundational to the identity of the Church as "one body" with "one Spirit" and "one hope" [[Ephesians 4:4]]. This is reinforced by the declaration of "one Lord, one faith, one baptism" [[Ephesians 4:5]], defining a unified spiritual community.
* **Covenantal Oneness:** `{{G3391}}` establishes the theological basis for marriage as an indivisible union created by God, where two become "one flesh" ([[Matthew 19:6]], [[Mark 10:8]]).
* **Singularity of Salvation:** The term highlights the unique and complete nature of Christ's redemptive work. Believers are perfected "by one offering" [[Hebrews 10:14]], and Christ offered "one sacrifice for sins for ever" [[Hebrews 10:12]].
* **The First Day:** The consistent designation of "the first day of the week" is theologically important, marking the day of Christ's resurrection [[John 20:1]] and a time for believers to assemble [[1 Corinthians 16:2]].
### Summary
In summary, `{{G3391}}` is far more than a simple number. It is a cornerstone of biblical theology, defining spiritual unity, covenantal relationships, and the unique nature of God's redemptive plan. From specifying "one woe" [[Revelation 9:12]] to describing the "one mind" [[Revelation 17:13]] of those who agree, the word demonstrates how a simple term can convey layers of profound meaning.
TRV