(Devarim 32:10) "He found him in a desert land": This refers to our father Abraham. An analogy: A king and his soldiers go out to the wilderness, whereupon his soldiers bring him to a place of afflictions, invaders, and marauders, and they abandon him — whereupon there joins him a hero, who says to him: King, do not despair; fear nothing. I swear not to leave you until you return to your palace and sleep in your bed, as it is written (in respect to Abraham, Bereshith 15:7) "I am the L-rd, who brought you out of Ur Kasdim, etc."