Which knew (ho gnous). Articular participle (second aorist active, punctiliar and timeless). The one who knows. So as to mē hetoimasas ē poiēsas (does not make ready or do).
Shall be beaten with many stripes (darēsetai pollas). Second future passive of derō, to skin, to beat, to flay (see on Mat 21:35; Mar 12:3, Mar 12:5). The passive voice retains here the accusative pollas (supply plēgas, present in Luk 10:30). The same explanation applies to oligas in Luk 12:48.