Zechariah 14:3-9

Then the LORD will go out and fight against those nations, as he fights on a day of battle. On that day his feet will stand on the Mount of Olives, east of Jerusalem, and the Mount of Olives will be split in two from east to west, forming a great valley, with half of the mountain moving north and half moving south. You will flee by my mountain valley, for it will extend to Azel. You will 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 will be neither sunlight nor cold, frosty darkness. It will be a unique day—a day known only to the LORD—with no distinction between day and night. When evening comes, there will be light.
On that day living water will flow out from Jerusalem, half of it east to the Dead Sea and half of it west to the Mediterranean Sea, in summer and in winter.
The LORD will be king over the whole earth. On that day there will be one LORD, and his name the only name.