Mark 6:5

(ubi sup.) Not as if He Who knows all things before they are done, wonders at what He did not expect or look forward to, but knowing the hidden things of the heart, and wishing to intimate to men that it was wonderful, He openly shows that He wonders. And indeed the blindness of the Jews is wonderful, for they neither believed what their prophets said of Christ, nor would in their own persons believe on Christ, Who was born amongst them. Mystically again; Christ is despised in His own house and country, that is, amongst the people of the Jews, and therefore He worked few miracles there, lest they should become altogether inexcusable. But He performs greater miracles every day amongst the Gentiles, not so much in the healing of their bodies, as in the salvation of their souls.

There follows, And he could there do no mighty work, &c. What, however, is here expressed by He could not, we must take to mean, He did not choose, because it was not that He was weak, but that they were faithless; He does not therefore work any miracles there, for he spared them, lest they should be worthy of greater blame, if they believed not, even with miracles before their eyes. Or else, for the working of miracles, not only the power of the Worker is necessary, but the faith of the recipient, which was wanting in this case: therefore Jesus did not choose to work any signs there. There follows, And he marvelled at their unbelief.