I was talking specifically about that text.Sure it is. Forgive me if I misunderstood you, but it appeared to me that you identify a pronoun as reflexive as if that is it's only function. Note Smyth:
1218. Direct Reflexives.—The reflexive pronouns are used directly when they refer to the chief word (usually the subject) of the sentence or clause in which they stand.
γνῶθι σεαυτόν learn to know thyself P. Charm. 164e
In the example "learn to know thyself" (γνῶθι σεαυτόν) the reflexive pronoun is reflexive and also the accusative direct object of the verb. The object of knowing is "thyself."
At Philippians 2 the reflexive pronoun is also the accusative direct object of the verb. Therefore what is known is "thyself" and what was emptied was "himself."
Being a reflexive pronoun and the direct object are not mutually exclusive properties.