Every year on the eve of Yom Kippur we recite KOL NIDRE.
According to the PESHAT (simple meaning) we nullify OUR vows (I emphasize OUR). But according to Rabbi Shimeon Bar Yochai in the Zohar, we are nullifying a vow of ZA (God) who was upset with us on account of our sins, destroyed the temple and vowed not to have a ZIVUG (cohabitation) with the SHECHINA and therefore postpone the redemption indefinitely (very harsh reality). In the Zohar below Rabbi Shimeon Goes to IMA and ABA to cause them to nullify the vow of their son ZA (as parents can do).
And therefore the the custom has spread throughout all the communities to recite KOL NIDRE in an attempt to nullify the VOW OF ZA and thereby ZA (God) cohabits with NOK (Shechina) and bring about the GEULA - the REDEMPTION. This should be our Kavana (meditation) in order to bring about the GEULA-REDEMPTION and the MASHIACH. And this is why we say לשם ייחוד קודשא בריך הוא ושכינתה before anything we do. In order to hasten the redemption.
If you want MASHIACH to come you have to ask for it and you have to know how. ONLY the Zohar has the answer! As stated in the Zohar, ONLY BY LEARNING THE ZOHAR THE REDEMPTION WILL COME AND NOTHING ELSE.
Kol Nidre, which means "all vows", nullifies the binding nature of such promises in advance. One declares all future vows and promises invalid, by declaring that all vows are "absolved, remitted, cancelled, declared null and void, not in force of in effect."
