This is the fifth service of the day, corresponding to the soul’s deepest and most profound dimension. It is truly the Chatimah, the final seal. This is your last chance, before the gates close, to offer your prayers one final time. At this moment, we are locked in G‑d’s innermost chamber, alone with Him. You are the gatekeeper. Our Sages teach that this is a special segulah (merit) for arichut yamim—LONG LIFE!”