εἷς (eis) in Romans 3:30: Adjective Nominative Singular Masculine

Adjective: the form qualifies a noun and can also stand substantively, so it names 'one' without changing the lemma into another word.

Nominative: the form is marked for a clause-level role here, and in this sentence it agrees with the surrounding subject expression rather than standing apart from it.

Singular: the form is grammatically singular in this occurrence, which supports a single referent or a unified idea in context.

Masculine: the form matches the masculine grammatical pattern of the phrase, but this is a grammatical feature only and does not create a gendered theological claim.

ὁ Θεός

The form agrees with the nearby noun phrase and works with the article and noun to state a shared idea of oneness. It is not best treated as a loose standalone label, but as part of the clause's assertion about God.

It helps express that God is one, reinforcing the sentence's point about a single God who acts for both circumcision and uncircumcision.

It does not by itself define God's nature in a philosophical way, and it does not shift the verse away from its argument about justification.

High: The adjective supports Paul's claim that one God justifies both circumcision and uncircumcision.

Attributive or predicate modifier of God. expresses oneness in relation to God as part of the verse's argument about justification. Attached to the phrase the God. Governed by the sentence about one God and one justifying action. The modifier supports divine oneness in this argument, but the verse decides how that oneness functions.

What does the adjective contribute to Paul's argument? It contributes the claim of one God, which grounds the shared justification of circumcision and uncircumcision.

Direct: The form directly supports rendering the phrase as one God in the flow of the argument.

The adjective supports oneness, but it should not be detached from Paul's argument about justification by faith.

Adjective alone defines all divine unity doctrine: The adjective supports the verse's claim, but the doctrine should be taught from the full biblical context. masculine agreement creates a separate gender claim: The masculine agreement is grammatical with the noun and does not create a new gender argument.

The witnessed text reads ἐπείπερ εἷς ὁ Θεός, placing εἷς directly before ὁ Θεός in the surviving form.

The lemma εἷς means one. In this context it carries the sense of singularity or unity, and the lexicon notes that it can mean one and the same.

Its nominative singular masculine form agrees with ὁ Θεός and supports a predicative sense: God is one. The grammar serves the sentence, but the sentence itself controls the nuance.

Paul's point is that the same God justifies both groups by faith. The oneness language supports the argument that there is not one saving God for one group and another for the other group.

Within Romans 3, the wording fits Paul's wider insistence that God's saving action is consistent and unified. The form supports that flow without adding details beyond the verse.

In teaching or translation, the form can be rendered simply as one or one and the same, depending on the immediate flow of the clause.

Do not derive a separate doctrine from the case, number, or gender alone, and do not treat the form as overriding the verse's argument.