וְהָיָ֣ה ׀ בַּיּ֣וֹם הַה֗וּא יֵצְא֤וּ מַֽיִם־חַיִּים֙ מִיר֣וּשָׁלִַ֔ם חֶצְיָ֗ם אֶל־הַיָּם֙ הַקַּדְמוֹנִ֔י וְחֶצְיָ֖ם אֶל־הַיָּ֣ם הָאַחֲר֑וֹן בַּקַּ֥יִץ וּבָחֹ֖רֶף יִֽהְיֶֽה׃
그 날에 생수가 예루살렘에서 솟아나서 절반은 동해로, 절반은 서해로 흐를 것이라 여름에도 겨울에도 그러하리라
Rashi
And it shall come to pass on that day when the Mount of Olives will split from east to west.
Rashi
spring water shall come forth from Jerusalem and flow to the east by way of the crevice to... the eastern sea which is to the east of the world; and half of it will turn to the west, to the western sea. This is the spring concerning which Joel (4:18) prophesied: “And a spring shall emanate from the house of the Lord.” That is the spring concerning which Ezekiel (47:3) prophesied: “And he measured a thousand cubits and he made me pass through the water.”
Tze'enah Ure'enah
“On that day living waters shall flow from Jerusalem” [14:8]. On that day, a spring of water will flow from Jerusalem. Half will go to the east to the sea and half to the west to the lowest sea. In summer and in winter the water will not cease flowing. That is to say, the cold will not harm it in the winter or the heat in the summer.