“Take to yourself Yehoshua bin Nun, a man in whom there is spirit, and lean your hand upon him.” (27:18)
In his commentary, Rashi notes the difference between Hashem’s instructions to Moshe Rabbeinu as to the manner of semichah, leaning/placing his hand on Yehoshua, and the actual performance in which Moshe placed both hands upon Yehoshua. Rashi writes: “He leaned his hands” – generously, much more than he had been commanded. For Hashem said to him, “And lean your hand, and he leaned with both hands – like a vessel which is full and brimming over and filled him generously with his wisdom.” Rashi clearly writes that Moshe gave extra wisdom of his own to Yehoshua. The Talmud (Bava Kamma…