Staying up Shavuot night

Hi,

The Zohar records that early pious Jews were wont to remain awake all night on Shavuot, immersed in the study of Torah.

While there is a mystical explanation for the benefit associated with this practice, the simple explanation is that it corrects the error of the Jews at Sinai. It would have made sense for the Jews to have waited up at Sinai all night for the chance to commune with Gd and receive the Torah, but the Torah records that the Jews were only brought out of their tents in the morning by the sounds of the revelation at Sinai.

Therefore, we demonstrate our love for Torah by staying up Shavuot night, engaged in the study of Torah.

(Mishneh Berurah 494:1)

Have a great day,
Mordechai