θεμέλιος

belonging to the foundation

Definition

θεμέλιος (themelios) primarily means 'belonging to the foundation' and refers to the foundational structure or base upon which something is built. In the New Testament, it is used both literally for the foundation of a physical building (Luke 6:48-49, Luke 14:29) and metaphorically for the doctrinal or spiritual foundation of the Christian faith and community. For example, in 1 Corinthians 3:10-12, Paul describes himself as a 'wise master builder' who laid the foundation of Jesus Christ, upon which others build. The word also appears in the context of establishing new churches, as in Romans 15:20, where Paul speaks of not building on another's foundation.

Biblical Usage

The word is used 15 times in the New Testament, appearing in the Gospels (Luke), Acts, and the Pauline epistles (Romans, 1 Corinthians, Ephesians, 1 Timothy, 2 Timothy, Hebrews, Revelation). Its usage is split between literal, physical foundations (e.g., Luke 6:48-49, Acts 16:26) and rich theological metaphors. In the epistles, it consistently refers to the foundational teachings or reality of Christ and the apostles' work (e.g., 1 Corinthians 3:10-12, Ephesians 2:20).

Etymology

Derived from the Greek verb τίθημι (tithēmi), meaning 'to place' or 'to set.' The related noun θεμέλιον (themelion) means 'foundation.' Thus, θεμέλιος as an adjective describes something that is 'set down' or 'placed' as a base, carrying the inherent idea of something established, firm, and fundamental.

Semantic Range

This word is theologically significant as it is central to the New Testament's architectural imagery for the church. Jesus Christ is explicitly identified as the sole, unshakable foundation (1 Corinthians 3:11). The apostles and prophets are also described as part of the foundation (Ephesians 2:20), highlighting the authority of their teaching. Understanding this Greek term enriches reading by clarifying that the Christian life and community are built on the established, historical reality of Christ, not on shifting human ideas.

In the ancient Greco-Roman world, laying a solid foundation was a critical and well-understood first step in construction, especially for large public buildings and temples. The imagery would resonate immediately with readers, conveying ideas of stability, permanence, careful planning, and the necessity of a proper base for anything meant to last. This contrasts with modern, quicker construction methods where foundations may be less visually emphasized.

βάσις (basis, G939) — A base or pedestal, often for a statue; less commonly used for building foundations in the NT. κρηπὶς (krēpis, G1477) — A foundation or base, but can specifically refer to the foot or bottom of something.

Word Details

Scripture References