Θεοῦ, (Theou) in John 20:31: Noun Genitive Singular Masculine

Noun: the word names a person, reality, title, idea, or thing in the sentence. Context determines what the noun contributes here.

Genitive: the case marks how the noun relates to the surrounding words in this occurrence.

Singular: the form is grammatically singular or plural in this occurrence and should be read within the clause context.

Masculine: the noun belongs to this grammatical class here. Grammatical gender does not by itself make a theological gender claim.

Χριστὸς ὁ υἱὸς τοῦ Θεοῦ, καὶ ἵνα πιστεύοντες ζωὴν

The title phrase identifying Jesus as the Son of God

Θεοῦ, is a Noun Genitive Singular Masculine within "Χριστὸς ὁ υἱὸς τοῦ Θεοῦ, καὶ ἵνα πιστεύοντες ζωὴν". The genitive noun completes the title Son of God, showing whose Son is in view and sharpening the confession John wants readers to believe.

The genitive does not by itself define every dimension of Father-Son relation. John 20:31 states the title, and the Gospel supplies the larger revelation.

High: The form matters because it functions as genitive-relation in John 20:31.

Noun Genitive Singular Masculine. marks a dependent relation with the surrounding phrase. Attached to the genitive phrase of God in Son of God. Governed by the title phrase identifying Jesus as the Son of God. The syntax should be explained from the clause, not isolated from the passage.

Whose Son does the confession name Jesus to be? The genitive points the title toward God: Jesus is confessed as the Son of God.

Direct: The form directly shapes how John 20:31 is read, especially its genitive-relation function.

The same morphology label can function differently in another verse. The immediate wording should decide the contextual force. Grammar identifies the form's role; the passage supplies the interpretive weight. Grammatical gender is not a separate theological claim.

Grammar alone proves doctrine: The form supports interpretation only as it serves the verse and its context. genitive case proves one fixed relation: A genitive marks a dependent relation, but the verse and context determine the kind of relation being expressed. grammatical gender proves theology: Grammatical gender is a language feature and should not be pressed beyond the verse.

The Textus Receptus witness for John 20:31 reads Θεοῦ, with the morphology label Noun Genitive Singular Masculine.

The lemma is θεός. The guide uses the gloss "God, a god" only to orient this occurrence.

Θεοῦ, appears in the phrase "Χριστὸς ὁ υἱὸς τοῦ Θεοῦ, καὶ ἵνα πιστεύοντες ζωὴν". The genitive noun completes the title Son of God, showing whose Son is in view and sharpening the confession John wants readers to believe.

John 20:31 connects the written signs to belief that Jesus is the Christ, the Son of God, and to life in his name.

The form fits Scripture's confession of Jesus' unique relation to God, while this occurrence remains governed by John's purpose statement.

When teaching John 20:31, use this genitive to explain the title phrase carefully before moving to broader Christology.

Do not make the genitive case alone settle the full metaphysics of Sonship. The case marks relation; the Gospel's witness carries the doctrinal weight.