God's Power and our Faith

Origen:

And perhaps, as in the case of metallic substances there exists in some a natural attraction toward some other thing, as in the magnet for iron, and in naphtha for fire, so there is an attraction in such faith toward the divine power according to what Jesus said: “If you have faith as a grain of mustard seed, you shall say to this mountain, ‘Move to another place,’ and it shall be moved.” Matthew and Mark wished to present the all-surpassing value of that divine power as a power that works even in those who do not believe. But they did not deny that grace works even more powerfully among those who have faith. So it seems to me that they accurately said not that the Lord did not do any mighty works because of their unbelief, but that he did not do many there. Mark does not flatly say that he could do no mighty work there at all, and stop at that point, but added, “except that he laid his hands upon a few sick folk and healed them.” Thus the power in him overcame their unbelief.