Variantly: "the valley of Jericho": Cannot anyone see the valley of Jericho? But just as in a plain one can see this field full of wheat and that field sown with barley, so he showed him all of Eretz Yisrael as (He would) the valley of Jericho.
"the city of palms": We are hereby taught that He showed him Devorah, (it being written here, "the city of palms, and elsewhere, (Judges 4:5) "and she would sit under the date-palm of Devorah." Variantly: "the city of palms": He showed him Gan Eden and the righteous strolling in it, viz. (Psalms 92:13) "The righteous one will flourish like a date-palm."