We uncover the secret of the thirteenth aspect. There is a higher aspect of it, which is represented by Yaacov, and a lower aspect, as it is revealed in the lower realms, which is represented by Yosef. We explore how this applies to the tribes and the leap year, why it is necessary, and what this means for the Moshiach ben Yosef process. We also explore why it is impossible to guess the date when Moshiach will reveal himself.