{Was strengthened} (enischuth(885c)). First aorist passive
indicative of enischu(935c), to receive strength (ischus),
comparatively late verb and here only in the N.T. save  Lu 22:43 
where it is doubtful. Poor verse division. This clause belongs in
sense to verse  18 . {Some days} (h(886d)eras tinas). An indefinite
period, probably not long, the early period in Damascus before
Saul left for Arabia ( Ga 1:13-24 ).