Midrash sur Job 40:31

Rabba said further in the name of R. Jochanan: "The Holy One, praised be He! will make a succah for the righteous from the skin of the leviathan, as it is said (Ib. 31) Canst thou fill his skin with Succoth. If the righteous merits he will have a booth; but if he does not merit he will get a little hut, as it is said (Ib.) And with fist spear his head; and if still less, then a necklace will be made for him, as it is said (Prov. 1, 9) And chains for thy throat; and if still less, an amulet will be made for him, as it is said (Job 40, 29) And tied him up for thy maidens? And tlie remainder of the skin the Lord will spread on the walls of Jerusalem, and the brightness of it will shine from one end of the world to the other, as it is said (Is. 69, 3) and nations shall walk by thy light, and kings by the brightness of thy shining."