reflexive pronoun

A reflexive pronoun is a pronoun whose antecedent is the subject of the sentence.  Note: not the same as an intensive.  In these sentences:

I see him.             “She sees you.

the DOs are not the same person as the subjects, and regular pronouns are used.  However, when the subject is the same as the DO, then the reflexive pronoun is used:

I see myself.              She sees herself.

Because of this, there is never a reflexive pronoun in the nominative case.

Reflexive Pronoun, first person, ἐμαυτοῦ, myself
Singular Plural
Masculine Feminine Masculine Feminine
Genitive ἐμαυτοῦ ἐμαυτῆς ἡμῶν αὐτῶν ἡμῶν αὐτῶν
Dative ἐμαυτῷ ἐμαυτῇ ἡμῖν αὐτοῖς ἡμῖν αὐταῖς
Accusative ἐμαυτόν ἐμαυτήν ἡμᾶς αὐτούς ἡμᾶς αὐτάς
Reflexive Pronoun, second person, σεαυτοῦ, yourself
Singular Plural
Masculine Feminine Masculine Feminine
Genitive σεαυτοῦ σεαυτῆς ὑμῶν αὐτῶν ὑμῶν αὐτῶν
Dative σεαυτῷ σεαυτῇ ὑμῖν αὐτοῖς ὑμῖν αὐταῖς
Accusative σεαυτόν σεαυτήν ὑμᾶς αὐτούς ὑμᾶς αὐτάς
Reflexive Pronoun, third person, ἑαυτοῦ, himself, herself, itself

Singular (himself, herself, itself) Plural (themselves)
Masculine Feminine Neuter Masculine Feminine Neuter
Genitive ἑαυτοῦ ἑαυτῆς ἑαυτοῦ ἑαυτῶν ἑαυτῶν ἑαυτῶν
Dative ἑαυτῷ ἑαυτῇ ἑαυτῷ ἑαυτοις ἑαυταῖς ἑαυτοῖς
Accusative ἑαυτόν ἑαυτήν ἑαυτό ἑαυτούς ἑαυτάς ἑαυτά

“The first and second person reflexive pronouns have only singular forms. The plural forms of the third person ἑαυτοῦ also function as plurals for the first and second person. Context must determine if first and second person is intended. Decker, Reading Koine Greek, 179.  See Moulton’s comment on this as well.