Cyril of Alexandria

That woman was delivered, being saved from a state of suffering thus bitter and incurable; and thereby we again obtain the firm assurance, that the Emmanuel is very God. How and in what manner? Both from the miraculous event itself, and from the words which with divine dignity He spake. "For, I know, He said, that power has gone forth from Me." But it transcends our degree, or probably that even of the angels, to send forth any power, and that of their own nature, as something that is of themselves. …

Commentary On Luke, Homily 45 ↗

Bede

And Jesus said: "Someone touched me. For I know that power has gone out from me," etc. Let Pelagius say, if he pleases, that he is saved by his own effort. But let us say that the salvation of man is vain, in God we shall do virtue. For He also knows that the power, which is propitious to all our iniquities and heals all our infirmities, goes out not from ourselves but from Him. …

On the Gospel of Luke ↗

Bonaventure

For which reason he adds: And Jesus said: Someone has touched me, that is, some person, namely by a spiritual touch; and he proves this: For I know that virtue has gone out from me. He says this with regard to the effect of the healing; and thus is verified that passage from Wisdom 12: "But you show your power, you who are not believed to be consummate in power." Moreover, he shows the effect going out from him, according to what is said above in the sixth chapter, that "virtue went out from him and healed all." Nor is this …

Commentary on Luke, Chapter 8 ↗