Midrasch zu Jeschijahu 43:19

4 Another interpretation: Why did all these stages (places) merit to be written in the Torah? Since they received (accommodated) Israel, the Holy One, blessed be He, will give them their reward in the future. It is so stated (in Isaiah 35:1-2), "The arid desert shall be glad.... It shall blossom abundantly, it shall also exult...." And if the desert [will receive] such for receiving Israel; one who receives a Torah scholar into his home, all the more so [will he be rewarded]. You find that in the future the desert will be a settlement and a settlement will be a desert. And where is it shown a settlement will be a desert in the future? It is so stated (Malachi 1:3), "And I have hated Esav and will make his hills a desolation." And where is it shown a desert will be a settlement in the future? It is so stated (Isaiah 41:8), "I will make a desert into a lake of water." Now there are no trees in the desert, but there will be trees there in the future, as stated (Isaiah 41:19), "I will put cedar and acacia in the desert...." Now there is no path there, as it is all sand. But there will be a path there in the future, as stated (Isaiah 43:19), "I will place a path in the desert […]." And it states (Isaiah 35:8), "And there will be a highway there, and it shall be called the Sacred Way [...]."

Rabbi Eliezer said: In the future the Temple will be raised up and renewed, as it is said, "Behold, I will do a new thing; now shall it spring forth; shall ye not know it?" (Isa. 43:19). || And its gates which are buried in the earth will be renewed in the future and arise every one in its place, and the gate of the inner court which turned to the east. On the six days of work its doors shall be closed, and on the Sabbath day they are opened by themselves, as it is said, "Thus saith the Lord God: The gate of the inner court that looketh toward the east shall be shut the six working days; but on the Sabbath day it shall be opened, and in the day of the new moon it shall be opened" (Ezek. 46:1).