There is a spiritual healing and there is a physical healing, two different things. Jesus Christ most certainly physically healed many thousands of people during His lifetime on earth that were not converted/Elect.
Then there are the few who are spiritually healed of spiritual blindness, nothing physical about it, these are those that have their eyes opened to these truths.
http://bible-truths.com/twelve.htm ----------------
This is another one of those marvelous spiritual truths of Scripture, which you will never hear explained in the Church. Just what do they teach all these future clergymen in seminary? The fact is, Jesus did not want the people to understand Him and Jesus did not want them to repent and Jesus did not want to spiritually heal or save them. He clearly said so. But why? Because God has a plan that involves calling MANY, but choosing out only a FEW.
"For whosoever has, to him shall be given, and he shall have more abundance: but whosoever has not, from him shall be taken away even that he has" (Matt. 13:12).
Why did Jesus reveal His message, His gospel, His kingdom, His word to so very few people? Christ’s answer is much harder for most to believe than the parables themselves:
"And the disciples came, and said unto Him, WHY speak You unto them in parables? He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven [not at that precise time, but eventually, after His resurrection] but to them it is not given [not then OR later]. For whosoever has, to him shall be given, and he shall have more abundance: but whosoever has not, from him shall be taken away even that he has [another parable answers the reason for parables]. Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand [here Jesus gives us a parable within a riddle].
"And in them [and in all future generations down through the centuries, save a very small elect few] is fulfilled the prophecy of Isaiah, which says, By hearing you shall hear, and shall not understand, and seeing you shall see, and shall not perceive: For this people’s heart [the people’s heart in Isaiah’s day, Christ’s day, through the generations, and in our day] is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes and hear with their ears, and should understand with their heart, and should be converted, and I should HEAL them [SAVE them].
"But blessed are your eyes, for they see: and your ears, for they hear. For verily I say unto you, that many prophets and righteous men [all the patriarchs of the Old Testament] have desired to see those things which you see, and have NOT seen them, and to hear those things which you hear, and have NOT heard them" (Matt. 13:10-17).
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Concerning physical healing, since Christ is the Creator/Designer of mankind and as God knows our human body in all it's intricacies, I think He would certainly knows when there is something physically wrong any where in a person's body down to the least lilttle thing in the body that was out of kilter. He would know what is wrong, what was need to correct it and I think could explain it to anybody as simply or as complicated as need be. That's just how I see it.
mercy, peace and love
Kat