Why Staying Up on Shavuot is More Powerful Than You Think - Rabbi Zamir Cohen

On the holiday of Shavuot, it is customary in all Jewish communities to stay awake all night and study Torah. The holy Ari says that a person who has committed a sin punishable by karet, there are transgressions for which the Torah says that soul should be cut off. This is more connected to the spiritual dimension of a person. A person's soul is connected to a higher light, to a divine light. And if he commits a sin punishable by karet, then it is cut off from there. Here he goes about his life as usual, but at the root he is not connected. This has many consequences. He repents, regrets that transgression. How does he repair the correct transgression that he committed? So, there are mortifications written about in the Kabbalistic books, but the Ari of blessed memory says that a person who sits all night and studies Torah repairs a correct transgression even without undergoing mortifications or other types of afflictions.