Ingressive Aorist.—The aorist of verbs whose present denotes a state or a continued action, expresses the entrance into that state or the beginning of that action.
a. This holds true of the other moods. Greek has no special form to denote entrance into a state in present time ( cross1853).
Herbert Weir Smyth [n.d.], A Greek Grammar for Colleges; Machine readable text [info] [word count] [Smyth].