The presence of ὑμᾶς you functioning as the direct object means this clause cannot be reflexive.
Aorist imperative attic.
For the distinction of time between the present and aorist see 313.
Personal endings of the active imperative.
Notice that the plural forms of the aorist active indicative of γινώσκω use a second aorist stem but first aorist endings.
Abbreviated aor verb forms usually express perfective aspect and refer to past events similar to a preterite.
Here chose translates an aorist middle form 2nd aor.
Ancient greek grammar had the aorist form and the grammars of other indo european languages and languages influenced by the indo european grammatical tradition such as middle persian sanskrit armenian the south slavic languages and georgian also.
In traditional grammatical terminology the aorist is a tense a section of the verb paradigm formed with the same stem across all moods by contrast in theoretical linguistics tense refers to a form that specifies a point in time past present or future so the aorist is a tense aspect combination.
Of αἰρῶ αἰρέω choose.
The imperative is used to express a command exhortation or an entreaty.
The literary greek of athens in the fifth and fourth centuries bc attic.
Aorist ˈ eɪ ə r ɪ s t.
Change from the aorist tense to the present and imperfect tenses in the same person and number.
Because the aorist stem of γινώσκω γνω ends in the long vowel ω the thematic vowel of the singular endings is lost through contraction.