Sefirat Ha'Omer: The Secret Gematria of the Omer

The Torah commands us to count the days from Pesach to Shavuot, and that's called Sefirat HaOmer. The name's puzzling. The Omer was a one-time barley offering brought in the Temple on the second day of Pesach. Why define the entire period of counting by a one-time korban? Wouldn't it be more precise to call it the count to Shavuot or something like that? Sefirah commonly means counting, but it also means clarification or illumination. But what are we clarifying in the Omer? The gematria, the numerical equivalent of Omer, is 310. 310 is also the gematria of yesh. Yesh means there is. Yesh means existence [music] itself. The Mishnah in Uksin explains that in the world to come, Hakadosh Baruch Hu Hashem will grant each [music] tzaddik 310 worlds. These 310 worlds are the perception of existence itself, yesh. Thus, Sefirat HaOmer becomes Sefirat HaYesh, the clarification of what is, what is to be, existence itself.