Κυρίου· (Kuriou) in Matthew 1:24: Noun Genitive Singular Masculine

Noun: this form names a personal referent or title, and here it functions within a genitive phrase rather than standing alone.

Genitive: the form commonly marks possession, description, source, or close relation, and the context must decide which nuance is strongest.

Singular: the form is grammatically singular in this occurrence, so it points to one referent within the phrase.

Masculine: the noun is marked masculine in grammar, which describes form and agreement only and does not by itself make a theological or social claim.

It is attached to ὁ ἄγγελος, forming the phrase ὁ ἄγγελος Κυρίου.

The genitive is governed by the head noun ἄγγελος and supplies a relational description of the messenger, indicating whose messenger is in view.

It functions as a genitive modifier that identifies the angel in relation to the Lord, so the phrase reads as a messenger belonging to or sent by the Lord.

It is not the subject of the clause, and the case alone does not require a full doctrinal conclusion beyond the relational sense created by the phrase.

High: The genitive noun identifies the angel whose command Joseph obeys as related to the Lord.

Genitive singular noun modifying angel. marks the messenger as belonging to, sent by, or associated with the Lord. Attached to the angel-of-the-Lord phrase in Matthew 1:24. Governed by the noun angel in the obedience summary. The form explains the messenger's relation while the verse emphasizes Joseph's obedience to the command.

Whose messenger gave Joseph the command? The genitive relates the angel to the Lord, identifying the command as Lord-linked instruction.

Direct: The form directly supports wording such as "angel of the Lord."

The genitive relation may be described as possession, source, or association; the narrative emphasis is the authorized message. The form does not make the angel the grammatical subject of Joseph's action.

Genitive relation alone settles angelic identity: The form marks relation to the Lord; the narrative supplies the role of the angel. grammar shifts focus away from Joseph's obedience: The phrase identifies the messenger, while the clause reports Joseph doing what was commanded.

The witness reads Κυρίου in Matthew 1:24, within the phrase ὁ ἄγγελος Κυρίου, so the form is part of a linked title rather than an isolated noun.

The lemma κύριος can mean lord, master, or Lord, and the lexicon artifact notes its use as a title of authority and, in many contexts, a divine title.

The genitive here most naturally marks relation or association in the phrase, so it describes the angel as belonging to or representing the Lord without forcing a more specific nuance than the context supports.

The verse says Joseph acted as the angel of the Lord had instructed him, so the phrase helps present the message as carrying recognized authority.

Within Matthew's narrative, the phrase fits a pattern where divine guidance is mediated through a messenger, while the grammar itself simply supports the relation expressed in the title.

For readers and translators, the form communicates that the angel is not just any messenger, but one identified by relation to the Lord.

Do not derive from the genitive alone that every possible theological implication is settled, or that the grammar by itself proves more than the relational title in context.