What is the difference between Chochmah, Binah and Da'as?
Rashi: Chochmah is the knowledge that one attains from others; Binah, what one extrapolates and works out oneself from that knowledge, and Da'as is Ru'ach ha'Kodesh.
Targum Onkelos and Targum Yonasan: Chochmah is the knowledge that one attains from others; Binah, what one extrapolates and works out oneself from that knowledge, whereas Da'as is Wisdom or intelligence.
What was the extent of Betzalel's knowledge?
Rashi: Refer to 31:3:1:1.
Ramban: Refer to 31:2:1:2*.
B'rachos, 55a: Betzal'el even knew the combination of letters that Hashem used to create the world. 1
Which are somehow hinted in the Mishkan (Ramban), and which we know from the Pesukim in Mishlei, 3:19-20 "Hashem be'Chochmah Yisad Aretz Konein Shamayim bi'Tevunah" and "be'Da'ato Tehomos Nivk'u" (B'rachos, 55a). See also Torah Temimah, note 7.
