During his lifetime, Rav Brandwein continued to write the commentary on the Zohar after the death of his teacher, Rav Yehuda Ashlag, and also began to write a commentary on the Tikunei haZohar entitled Ma’alot haSulam (“Ascents [rungs] of the Ladder”).
Tikunei haZohar contains seventy different interpretations (tikkunim) by Rav Shimon bar Yochai of the Hebrew word beresheet, the first word of the Torah. Rav Shimon had fled the government that had issued an edict to kill him. While he and his son Rav Elazar hid in a cave in Peki’in for thirteen years, they were taught the entire Tikunei haZohar from Elijah the Prophet and Moses. There were no other disciples present, except these two, which is why there are no conversations among the disciples in the Tikunei haZohar like there are in the Book of Zohar and in Zohar Chadash. It is known that the Tikunei haZohar will help to hasten the coming of the Messiah and is related to, and was put aside, until the Messianic era.