Zechariah 14:3-9

Then the LORD will go out and fight against those nations as when he fights on a day of battle. On that day his feet shall stand on the Mount of Olives that lies before Jerusalem on the east, and the Mount of Olives shall be split in two from east to west by a very wide valley, so that one half of the Mount shall move northward, and the other half southward. And you shall flee to the valley of my mountains, for the valley of the mountains shall reach to Azal. And you shall flee as you fled from the earthquake in the days of Uzziah king of Judah. Then the LORD my God will come, and all the holy ones with him.
On that day there shall be no light, cold, or frost. And there shall be a unique day, which is known to the LORD, neither day nor night, but at evening time there shall be light.
On that day living waters shall flow out from Jerusalem, half of them to the eastern sea and half of them to the western sea. It shall continue in summer as in winter.
And the LORD will be king over all the earth. On that day the LORD will be one and his name one.