Earnest

In biblical usage, earnest (Greek arrabon) refers to a pledge or down payment that guarantees the full payment to follow — a legal and commercial term adopted by Paul to describe the Holy Spirit's role in the believer's life. The Spirit is called the "earnest of our inheritance" (2 Corinthians 1:22; 5:5; Ephesians 1:14), meaning that the present experience of the Spirit in regeneration, gifting, and sanctification is not the fullness of what God has promised but a real foretaste of the glory that will be revealed. The word was used in Greek commercial contracts for a deposit that both initiated a transaction and legally obligated completion.

The theological weight of the term is significant: the Spirit as earnest means that salvation is not merely a future promise but has already begun in the believer's present experience. The same Spirit who now intercedes, seals, and transforms the believer is the pledge of the bodily resurrection and the new creation. Paul uses this commercial metaphor to anchor eschatological hope in present spiritual reality rather than abstract expectation.