Sifrei Devarim 23

¹(Devarim 1:25) "And they took in their hand from the fruit of the land": R. Shimon said: Shameful are these men who took in their hand (such luxuriant fruits [to downgrade their worth]) as one would take in his hand an issar 's worth of figs or grapes. ²"and they brought it down to us" — whence it is seen that Eretz Yisrael is higher than all the (other) lands, as in (Bamidbar 13:30) "Let us go up and inherit it," and ( Ibid . 21) "And they went up and spied out the land," and (Bereshith 45:25) "And they went up from Egypt and they came to the land of Canaan." (Devarim, Ibid .) ³"And they returned word to us and they said: Good is the land that the L-rd our G-d gives us." Now did they speak good (of the land)? Did they not speak evil of it? — Who spoke good of it? Joshua and Calev — in spite of which ( Ibid . 26) "And you did not desire to go up, and you opposed the word of the L-rd your G-d." ...