ἴδιον (idion) in John 1:41: Adjective Accusative Singular Masculine

Adjective: the word qualifies a noun by adding a descriptive or limiting idea rather than naming a thing by itself.

Accusative: the form normally marks a direct object or another accusative relation, so its force here is read from the phrase around it.

Singular: the form is grammatically singular in this occurrence, so it is tied to one brother named in the sentence.

Masculine: the form belongs to the masculine grammatical class, which here matches the noun it modifies and does not by itself make a theological claim.

It is attached to τὸν ἀδελφὸν and points toward Σίμωνα within the phrase.

Its accusative singular masculine form agrees with the noun phrase it modifies and follows the article structure in the clause.

It helps specify that the brother in view is the brother proper to this person, his own brother Simon, rather than a brother in some looser or general sense.

It does not by itself turn the noun into a different word, and it does not require a special theological reading beyond the local identification.

Light: The adjective specifies the familial relation in the narrative.

Accusative singular masculine adjective modifying brother. identifies the brother as his own brother. Attached to the noun brother and the name Simon. Governed by the narrative clause about finding Simon. The agreement keeps the reference specific and relational without adding a separate theological claim.

Which brother is found? His own brother Simon is found.

Direct: The form directly supports wording such as "his own brother."

Masculine agreement follows the brother noun and does not create a theological gender claim.

Modifier overclaim: Do not make the adjective do more than specify the close familial relation in the phrase.

The witness reads ἴδιον in John 1:41, and the surrounding phrase is τὸν ἀδελφὸν τὸν ἴδιον Σίμωνα.

The lemma ἴδιος commonly carries the sense of one's own, private, or personal, and that basic identity fits the possessive coloring here.

Accusative singular masculine agreement with ἀδελφὸν shows that the adjective is describing that noun phrase rather than standing as a separate clause element.

The verse says the finder discovered his own brother Simon and then spoke to him, so the form supports a personal, familial identification in the narrative.

This use fits the broader pattern where ἴδιος marks what belongs especially to a person, a household, or a close relation without forcing extra nuance.

For communication, the form helps a reader hear the sentence as specific and relational, not merely as a report about any brother at all.

Do not derive more than the context supports, and do not make the adjective carry claims that belong to the larger narrative or theology instead.