We have been discussing the approach in bitachon that many Torah commentaries outline, where one can be so confident in relying on Hashem about something, to the point that according to this approach, one who is sick can have bitachon that they will get better; one who is short of money can have bitachon that they will find the sustenance they need; one who is searching for a marriage partner would be able to be confident that they will for sure find the one that they are seeking.
The question is, if bitachon is so powerful, and as we are taught - independent of our actions and available to every single one of us, then certainly when it comes to the very righteous people, the tzaddikim, why is it that so many of them do undergo suffering? If they would just practice their bitachon, then they would be able to be saved from their suffering.
There are many approaches offered by the Torah commentaries to resolve this question. The bottom line is, there is no question in the world that when one relies on Hashem, Hashem comes through for them. We will mention four approaches that are cited in the appendix of the Artscroll Beis Halevi on B'tachon.
One approach to answer this question is that of the Vilna Gaon. He writes that although one might have strong bitachon, it might not be strong enough to protect him from the suffering that he is undergoing. According to the level of danger or suffering that is present, one might need a stronger bitachon to remain calm through even this dangerous situation.
A second approach is that of the Brisker Rav, who says that many people think they have bitachon, but in truth their relaxed mood is as a result of not being aware of the seriousness of the danger they are in. Had they known how dire their situation really was, they would indeed have been very afraid.
The Leshem outlines two more approaches. In the one he explains that there are times when Hashem makes the drastic decision to suspend a person's free will in order to carry out his decree, and sometimes for reasons concealed from us, he will issue a harsh decree that needs to be executed, but if the individual would have bitachon in this situation, the decree would not be able to be executed, and therefore what Hashem does, He interferes with the individual's ability to have bitachon in order to allow this to happen.
And the Leshem offers another approach, where he says that the great sages were on such a high level of bitachon that they accepted everything Hashem did, and did not even have a desire to be relieved of any pain or suffering.
Although this approach of bitachon that we've been discussing is less conventional and perhaps less well known, it is certainly worth learning about it, as many Torah commentaries do bring it down as a valid approach, and it can certainly be relevant at different times to our lives.
However, what is super vital to remember and internalize is that having bitachon in Hashem should never turn into a test to see if Hashem will come through for me, then I will decide to continue in the path of serving Hashem. If that is the level that one is holding on, then this path of bitachon would certainly not be relevant to my current spiritual level. One's approach needs to be that before the fact, one davens to Hashem, one hopes to Hashem, and one might at times even be able to practice bitachon - reliance on Hashem, to the point that they are confident Hashem will come through for them in the way they desire.
However, after the fact, whether I received what I was requesting, or also if I didn't receive it, it is so vital to always live with the understanding that everything Hashem does is for the best, and if He did not come through for us in the way that we desired, it is nevertheless for sure for the best for us, because Hashem always does only what is best for us. In fact, one of the great early commentators, the Smag, followed by the Aruch HaShulchan, writes that just like there is a mitzvah to judge another Jew favorably, and if you see somebody else doing something that might appear suspicious, we have a mitzvah in the Torah to judge them favorably, in the same vein, we are obligated to judge Hashem favorably.
When things transpire throughout our lives, we have a mitzvah to try to find reason why Hashem would do that for us, and even though we of course can't understand Hashem's reason for doing things, nevertheless we certainly can give ourselves reason to justify that everything Hashem would do for us will always only be for our best.