Kabbalah su Salmi 19:2

Rabbi Shimon opened and said, (Ps. 19:2) “The Heavens declare the Creator’s greatness. I have already explained this, but when the bride awakens to enter the Huppah on the following day, with all the friends who rejoiced with her through that night, she rejoices with them, corrects herself and shines with her adornments.”

The hour when the Heaven (ZA) enters the Huppah and shines upon Malchut, all of her friends, who corrected her by studying the Torah, are known by their names, as it is said: “The Heavens declare the work of His hands.” “The work of His hands” refers to the members of this covenant, called “the work of His hands.” As you say: “Confirm for us the work of our hands,” which is the mark of the covenant, imprinted on man’s body.

And because of this, "the firmament proclaims His handiwork" (Ps. 19:2). These are the friends who have joined the Bride, (i.e. Malchut, by studying on Erev Shavuot), together with those who are the custodians of the sign of Her covenant. The firmament shows and registers each and every one of them. What is the firmament? It is where the sun, moon, stars and constellations are located, and it is the Book of Remembrance. It announces, registers, and inscribes them, so that they can be the residents of its own palace, and it can always fulfill their desires.