Musar su I Re 19:11

This can be explained, with the help of the L-rd, in various ways. [See what we have written above in the introduction.] It is written in Yerushalmi Peah 1:1 that just as the reward for Torah study is over and against all of the mitzvoth, so is the punishment for lashon hara over and against all of the transgressions. It is found, then, that just as Torah study is the greatest of all of the mitzvoth, so is lashon hara the severest of all of the sins. The reason, basically, is this: Just as with the elements that the blessed One has implanted in this world — fire, wind, water, and earth — the spiritual element is far stronger than the material so that the material is almost nothing compared to it, as we see plainly that when fire gets the upper hand over a material substance it destroys it, and, likewise, when the element of wind gets the upper hand, it can split mountains and break rocks, as it is written (I Kings 19:11): "And a great, strong wind, splitting mountains and breaking rocks," so is the thing with the "higher elements," such as tzitzith, lulav, shofar, and all the mitzvoth. Just as through them great things are worked in the higher worlds, and through them, too, a man is sanctified to the L-rd, as it is written (Numbers 15:40): "And you shall do all My mitzvoth and you shall be holy to your G-d," still, there is no comparison between them and Torah study, as we find in Yerushalmi Peah 1, that all of the mitzvoth are not comparable to one word of Torah. The reason is that all the mitzvoth are combined with matter. So that, for example, it is impossible to fulfill the mitzvah of tzitzith without donning a garment, which is material. And the same with succah and lulav, and thus with all of the mitzvoth. Not so with Torah study, which inheres in the faculty of speech, which is an abstract, "spiritual" faculty alone. For this reason its higher workings are awesome, wherefore the study of Torah is "over and against all." The reverse is true of kilkul ["damage"]. For with all of the organs through which he sins, because they are material, the kilkul wrought by them is not so [relatively] great. Not so, with the sin of lashon hara and rechiluth, which works purely through a spiritual agency, wherefore its kilkul in the higher worlds is awesome. Its punishment, therefore, correspondingly, is "over and against all."