The Rebbe teaches from Kabbalah that there is only one thing repeating itself indefinitely.
Life as we know it obviously consists as it states in the foundational book of Kabbalah, Olam (our universe) Shanah (time) and Nefesh (life/soul;) so you/life exist in a time-continuum within this universe.
But what makes this unique is a fourth dimension namely the Creator who creates continuously (see Shaar Hayichud Vehe-emunah The gateway to understanding belief and God’s unity in this world,) the universe, time, (for someone is making the globe and everything spin continuously (which they cannot do on their own and if they would, time would progressively slow down for the initial force would be slowing,) which creates a day, year, etc. and most importantly all the living things including you within.
The uniqueness about our universe is that though we do not see the fourth dimension (called number 8 in mysticism) nonetheless it is merely concealed from our highly limited vision (a few nano wavelengths in breadth) so what would happen if the fourth (8) dimension was revealed?
That would be like plugging in your computer into the nuclear power plants full blown energy!
But there is a way that the fourth dimension can penetrate our limited nano wavelength vision and here is what will, is, and manifesting recurringly for indefinite growth, unity and global peace and harmony.
When a teacher wishes to teach a student a new subject he breaks down the material into steps, first a. then b. then c. eventually leading up to reading writing etc.
So the fourth (8) dimension can break Himself into small drips that are both the essence of the fourth dimension (energy) yet at the same time capable of entering into our 3 dimensional reality much like the energy gets reduced from the nuclear power plant to give your computer the exact dosage it needs to remain running.
Similarly we are born into the 3 dimension paradigm incorporating the notion that time space and life as we know it is immutable, when in truth the fourth dimension has merely given us that appearance to create our unique limited understanding; then through seeking that which is true, we raise ourselves beyond limitation allowing the fourth dimension (God) to penetrate our consciousness with new insights; now as the fourth dimension (8) is truly infinite there will never end the newness excitement interesting novel insights into truth that truth – infinite truth – shall renew us in.