What does Ezekiel 47:12 mean?

And by the river upon the bank thereof, on this side and on that side, shall grow every tree for food, whose leaf shall not wither, neither shall the fruit thereof fail: it shall bring forth new fruit every month, because the waters thereof issue out of the sanctuary; and the fruit thereof shall be for food, and the leaf thereof for healing.

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.

And by the river upon the bank thereof, on this side and on that side, shall grow every tree for food, whose leaf shall not wither, neither shall the fruit thereof fail: it shall bring forth new fruit every month, because the waters thereof issue out of the sanctuary; and the fruit thereof shall be for food, and the leaf thereof for healing.

And by the edge of the river, on this side and on that, will come up every tree used for food, whose leaves will ever be green and its fruit will not come to an end: it will have new fruit every month, because its waters come out from the holy place: the fruit will be for food and the leaf will make well those who are ill.

And by the stream there cometh up on its edge, on this side and on that side, every <FI>kind of<Fi> fruit-tree whose leaf fadeth not, and not consumed is its fruit, according to its months it yieldeth first-fruits, because its waters from the sanctuary are coming forth; and its fruits hath been for food, and its leaf for medicine.

And by the torrent on the banks thereof on both sides shall grow all trees that bear fruit: their leaf shall not fall off, and their fruit shall not fail: every month shall they bring forth firstfruits, because the waters thereof shall issue out of the sanctuary: and the fruits thereof shall be for food, and the leaves thereof for medicine.

And by the river, upon its bank, on the one side and on the other, shall grow all trees for food, whose leaf shall not fade, nor their fruit fail: it shall bring forth new fruit every month, for its waters issue out of the sanctuary; and the fruit thereof shall be for food, and the leaf thereof for medicine.