I can see that in Torah also there us the legal aspect Gemara, and the spiritual.
The thing about the spiritual aspect is that it has the highest danger of delusion. And in Torah there were books like the Sefer Hayetzira and mystics. The problem that the Sitra Achra, the Dark Side, that gets mixed up in this area. And when it comes to "spiritual" things, it is hard to now what is from the realm of holiness and what is from the Dark Side.
You can have great saints [tzadikim] that serve God through personal fasting and prayer, like the Ari, the Gra. Rav Nahman, still the fact that they believed in the Zohar means there is a certain element that gets mixed up with them. After all the Zohar can not be from R. Shimon ben Yochai since on every few pages is contained the phrase עם כל דא מתורגם מן עם כל זה--"although" in the time of R Shimon ben Yochai was אף על פי או אף על גב. The עם כל דא מתורגם מן עם כל זה is a medieval invention by the family of translators --the Ibn Tibon family. So there is some element of the deception of the Zohar that gets mixed up with the good. Most people involved in mysticism are not spiritual but delusional
