κατʼ ἰδίαν : the disciples have some private talk with the Master as to what has just happened. διατί οὐκ ἠδυνήθημεν : the question implies that the experience was exceptional; in other words that on their Galilean mission, and, perhaps, at other times, they had possessed and exercised healing power.

Continues after advertising
Continues after advertising

Old Testament