Class Fourteen:
Ya’akov gave Dovid 28 years, this is the idea of Tiferes.
Because the 28 are the מילוי ומילוי דמילוי of שם הוי’ה.
The Milui has a higher source than the name itself, thus the כח אדנ”י is higher than אדנ”י itself.
The Mashal of Moshe bentching Hashem to add crowns to the Torah’s letters. Perek 2, Class 14
