14. οὐθὲν εὗρον … αἴτιον. ‘I find nothing punishable of the things which, &c.’ Thus Pilate’s word is a direct contradiction of that of the High Priest’s (εὕραμεν, Luk 23:2). The I is emphatic; you bring a charge, I after a public examination find it to be baseless. οὐδὲν ὧν = οὐδὲν τούτων ἅ.
κατηγορεῖτε κατ' αὐτοῦ. This construction is rare in classical Greek.