One of the reasons you should be aware of when Greek is using the Aorist Imperative or Subjunctive is that Aorist Imperative means its a one and only action to be completed.
You don't have to to take my word only for it.
Check out this site
You might want to also check out the TEXTKIT site and do a general Google search?
No new translation this week!
I need to catch up on prepping new material for next week!