Rev 21:6, Ezk 47:1,9,12, Zech 14:11, Jn 7:38
In the Old Testament, it was prophesied that the water of life would flow out of the temple to save everything. (Eze 47:1,9,12)
Eze 47:1 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. 9 And it shall come to pass, that every thing that liveth, which moveth, whithersoever the rivers shall come, shall live: and there shall be a very great multitude of fish, because these waters shall come thither: for they shall be healed; and every thing shall live whither the river cometh. 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.
The Holy Spirit, the river of living water, is poured out on those who believe in Jesus as the Christ. (John 7:38, Revelation 21:6)
John 7:38 He that believeth on me, as the scripture hath said, out of his belly shall flow rivers of living water.
Revelation 21:6 And he said unto me, It is done. I am Alpha and Omega, the beginning and the end. I will give unto him that is athirst of the fountain of the water of life freely.
From God and the Lamb Jesus Christ, the Holy Spirit, a river of water of life, will flow and heal everything. (Rev 22:1-4)
Rev 22:1 And he shewed me a pure river of water of life, clear as crystal, proceeding out of the throne of God and of the Lamb. 2 In the midst of the street of it, and on either side of the river, was there the tree of life, which bare twelve manner of fruits, and yielded her fruit every month: and the leaves of the tree were for the healing of the nations. 3 And there shall be no more curse: but the throne of God and of the Lamb shall be in it; and his servants shall serve him: 4 And they shall see his face; and his name shall be in their foreheads.