Likutei Moharan 22:3/ליקוטי מוהר"ן כ״ב:ג׳

13 . And one has to see to fill the hands, which are faith, with the illumination of the Seven Shepherds. They are the embodiment of all the leaders of the generation, as in (Exodus 29:35), “For seven days you shall fill their hands.” They tend the faith, to rectify and perfect it. This is why they are called shepherds, as in (Psalms 37:3), “… and shepherd faith.”

2It is they who draw the essence of Jewish faith to the generation. This corresponds to (Deuteronomy 33:3), “All his holy ones are in Your hands”—for they are synonymous with the embodiment of all the generation’s leaders. And this corresponds to (Hoshea 12:1), “With the holy ones He is faithful.” And this is why Moshe, who is one of the Seven Shepherds, is called the Faithful Shepherd <because he shepherds the faith>.