The greek aorist is often rendered in english as “perfect” in its usage
You have heard from the beginning …
ἀ + πιστos
Example of the alpha privative
οὐδείς, οὐδεμία, οὐδέν
Use for negative statements “negative noun”
πρὸ τοῦ + infinitive
before
πριν + infinitive
before
πριν ἤ + infinitive
before
ἐν τῳ + infinitive
while
μετα το + infinitive
after
προς τό + infinitive
in order to
ὥστε + infinitive
with the result that
τοῦ + infinitive
in order to, with the result that
εἰς τό + infinitive
in order to, with the result that
διὰ τό + infinitive
because