שְׂאוּ֩ לַשָּׁמַ֨יִם עֵֽינֵיכֶ֜ם וְֽהַבִּ֧יטוּ אֶל־הָאָ֣רֶץ מִתַּ֗חַת כִּֽי־שָׁמַ֜יִם כֶּעָשָׁ֤ן נִמְלָ֙חוּ֙ וְהָאָ֙רֶץ֙ כַּבֶּ֣גֶד תִּבְלֶ֔ה וְיֹשְׁבֶ֖יהָ כְּמוֹ־כֵ֣ן יְמוּת֑וּן וִישֽׁוּעָתִי֙ לְעוֹלָ֣ם תִּֽהְיֶ֔ה וְצִדְקָתִ֖י לֹ֥א תֵחָֽת׃ (ס)
Lift up your eyes to the heavens, And look upon the earth beneath; For the heavens shall vanish away like smoke, And the earth shall wax old like a garment, And they that dwell therein shall die in like manner; But My salvation shall be for ever, And My favour shall not be abolished.
Read halakhic rulings (Jewish law) on Isaiah 51:6: and classical halakhic sources.