Luke 8:43

And a woman having an issue of blood twelve years, who had spent her living upon physicians, and could not be healed of any, came behind him, and touched the border of his garment: and immediately the issue of her blood stanched.

This does not mean that any magical properties attached to Jesus' clothes, nor that it was possible for the woman to have been healed without the Lord's conscious willing of it.

And could not be healed of any ... Luke was careful here to defend, quite unconsciously, the reputation of the class of physicians to which he himself belonged. He avoided, but did not contradict, what Mark said of the outlandish remedies the poor sufferer had to endure at the hands of doctors. Luke seems to be saying, "She had an incurable malady!"

Immediately the issue ... was stanched ... The cure of the woman was instantaneous and complete. Luke here used a word, "stanched," more in keeping with a doctor's vocabulary. As MacKnight said:

It was necessary that the ministry of the Son of God should be rendered illustrious by all kinds of miracles, and that the whole people of the country where he lived, should have both the highest idea, and the firmest persuasion of his power.[22]

In keeping with such designs, Jesus willed, not only that the woman should be healed, but that also the full knowledge of it should be granted to the multitude. With infinite tenderness, however, Jesus spared the unfortunate sufferer the necessity of confessing her pitiful illness while it still continued, but reserved her confession until she could make it with the joy and vibrancy of health restored.