Midras Ulangan 34:2: Mekhilta DeRabbi Yishmael & Sifrei Devarim

And whence is it derived that He showed him Barak? From (Devarim 34:2) "and all of Naftali," it being written elsewhere (Judges 4:6) "And she sent and summoned Barak the son of Avinoam of Kedesh-Naftali."

And whence is it derived that He showed him Joshua in his kingdom? From (Devarim, Ibid.) "and the land of Ephraim," it being written elsewhere (Numbers 13:8) "from the tribe of Ephraim, Hoshea the son of Nun."

And whence is it derived that He showed him Gideon? From (Devarim, Ibid.) "Menasheh," it being written (of Gideon) elsewhere (Shoftim 6:15) "My clan is the humblest in Menasheh".