ah, guess you weren't around for it, or i maybe need to say it more often, but you are definitely right there. I got it wrong, and i work hard--but i guess maybe not hard enough--to assure people that i do not know what i am talking about, please seek other sources if you are looking for answers, and etc, i put it a couple other ways too.
Now, with that out of the way, it would be nice to examine this concept of "it is not God's will that one be infirm" with "you reap what you sow," which is hard to apply to, say, a newborn with autism, perhaps, unless the "you" is considered the collective you, "you all," which is often just rendered "you" in translations for clarity, forcing a historical perspective when reading Scripture and making it harder to associate, don't even get me started, but the point is that obviously it is not God's will that anyone be sick, but also it was not God's will that the world fall.
Stay with me here.
Because although these are phrased as not being "God's will," there is surely another sense in which if all this is not God's will then it cannot even be happening. God was not surprised when Eve took a bite, just as you are not surprised when your child still puts his finger in a fire after all of the warnings. The difference is mostly that God will let your finger sting until it gets better, whereas we seek palliative care for our children.
And this is a hard lesson to understand. But it is in fact God's will that you be sick, if you have sown sickness. Eve did not do anything "wrong" or even unexpected; Eve had to learn "you reap what you sow" which cannot be learned any other way. This is intrinsic to the Law of sin and death. What there is no escape from is pitched to us as "hell," but in fact it is the consequences of our actions, from which there is no escape, and this is put many different ways in Scripture.
If you grasp "you reap what you sow" you are in a much better position to understand why it is God's will that you have some sickness, with the understanding that it is not God's will. Otherwise you must also claim that you can cure diabetes II patients miraculously, so that they can continue their overconsumption of sugar analogs, etc, obviously violating "reap what you sow."
which does not mean that one is not forgiven for these, ok, or even that physical miracle healing might not occur in some context, but Scripture is referring to a change of heart/mind, symbolically, and "miracle-healing" even has quite a reek of "quick fix" to it, right. So, the Emperor got new clothes, don't be fooled lol