Imperative Mood

Imperative mood is the mood of commands and requests. It is similar to how English uses imperatives, however in Greek the imperatives also have a different form. Imperatives usually appear only in the Present or Aorist Tense, but they can take all three voices. They can be Singular as well as Plural and appear both in 2nd and 3rd person.

The tense, once again, only signifies if the action is continuous (Present Tense) or simple (Aorist Tense). The voices specify whether the person being spoken to should perform an action, or allow an action to occur to him. The most unusual for the English speaker is the 3rd person imperative. If the 2nd person imperatives are used to directly ask or command the person being spoken to, to do something, the 3rd person imperatives are indirect, still asking that the person being spoken to contributes to the action, but not emphasizing his agency directly. 

For example, the 2nd Person Singular Aorist Active Imperative in the following sentence ἄνῳξον τὴν θύραν can be translated as Open the door! On the other hand, the 3rd Person Singular Aorist Active Imperative here -- ἀυτὸς ἀνῳξάτω τὴν θύραν can be translated as Let him open the door! or Make him open the door! or He must open the door! And the 3rd Person Singular Aorist Passive Imperative in the sentence -- ἡ θύρα ἀνῳχθήτι can be translated as Let the door be opened! or The door must be opened!

Below, you can find the table with the forms of the Imperative. The Present tense uses the 1st Principal Part and the Aorist tense uses the 3rd and 6th Principal Parts with the epsilon-augment removed.