He which gave command (ho sumbouleusas). First aorist active articular participle of sumbouleuō, old verb (Mat 26:4). The reference is to Joh 11:50.
It was expedient (sumpherei). Present active indicative retained in indirect assertion after secondary tense (ēn, was). Here we have the second aorist active infinitive apothanein as the subject of sumpherei, both good idioms in the Koiné.