In Ezekiel 47 there is a altar and a sanctuary involved.
1 Afterward he brought me again unto the door of the house; and, behold, waters issued out from under the threshold of the house eastward: for the forefront of the house stood toward the east, and the waters came down from under from the right side of the house, at the south side of the ALTAR.
12 And by the river upon the bank thereof, on this side and on that side, shall grow all trees for meat, whose leaf shall not fade, neither shall the fruit thereof be consumed: it shall bring forth new fruit according to his months, because their waters they issued out of the SANCTUARY: and the fruit thereof shall be for meat, and the leaf thereof for medicine. (Ezekiel 47:1,12)
It describes the time when Christ has returned to the Mount of Olives (as He promised) and Jerusalem itself will be elevated because of the geographical landscape changes that will take place.
4 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.
5 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.
6 On that day there will be neither sunlight nor cold, frosty darkness.
7 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.
8 On that day LIVING WATER SHALL 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.
9 The Lord will be king over the whole earth. On that day there will be one Lord, and his name the only name.
10 The whole land, from Geba to Rimmon, south of Jerusalem, will become like the Arabah. But JERUSALEM WILL BE RAISED UP HIGH from the Benjamin Gate to the site of the First Gate, to the Corner Gate, and from the Tower of Hananel to the royal winepresses, and will remain in its place. 11 It will be inhabited; never again will it be destroyed. Jerusalem will be secure.