He hath given (dedōken). Perfect active indicative. Christ has permanent commission.
What I should say and what I should speak (ti eipō kai ti lalēsō). Indirect question retaining the deliberative subjunctive (second aorist active eipō, first aorist active lalēsō). Meyer and Westcott take eipō to refer to the content and lalēsō more to the varying manner of delivery. Possibly so.