When comparing Genesis and Revelation, we find similarities between the Paradise man lost and the Paradise to come.  Consider these verses about each:

Genesis 2:8-9: “And the LORD God planted a garden in Eden, in the east, and there he put the man whom he had formed.  And out of the ground the LORD God made to spring up every tree that is pleasant to the sight and good for food. The tree of life was in the midst of the garden, and the tree of the knowledge of good and evil.  A river flowed out of Eden to water the garden, and there it divided and became four rivers.”
Revelation 22:1-2: “Then the angel showed me the river of the water of life, bright as crystal, flowing from the throne of God and of the Lamb through the middle of the street of the city; also, on either side of the river, the tree of life with its twelve kinds of fruit, yielding its fruit each month. The leaves of the tree were for the healing of the nations.”

In each description is the tree of life, and also a river. Rivers are greatly beneficial to the growth of cities and civilizations, providing benefits for agriculture, trade, travel, etc.  Even today, most large cities that don’t border a large body of water have a navigable river nearby or flowing through it.  A big city without one is rare: in the United States, Dallas, Texas, and Charlotte, North Carolina, may be the only major cities not located near a significant river.

Rivers are mentioned a lot in the Bible, including in this Psalm about God being our refuge and fortress.  An unnamed river in the “city of God” is mentioned:

“There is a river whose streams make glad the city of God,
            the holy habitation of the Most High.” (Psalm 46:4)

However, Jerusalem, the place Jews in the Old Testament period would have considered the “city of God” does not have a river.  The Psalmist certainly knew this, so their point is about something else, that the “city of God” has, well, it has God, as described in the next verses:

“God is in the midst of her; she shall not be moved;
            God will help her when morning dawns.
The nations rage, the kingdoms totter;
            he utters his voice, the earth melts.
The LORD of hosts is with us;
            the God of Jacob is our fortress.  Selah” (Psalm 46:5-7)

Jerusalem may not have a river, but it has God who provides all it needs and more.  No river required.  Even though the literal, ancient Jerusalem was eventually destroyed by the Babylonians, and later by the Romans, the eternal City of God will never be moved.  All other nations “rage” and “totter,” but God’s kingdom is forever secured by the One whose voice melts the earth.  Hebrews 1:10-12 (quoting from Psalm 102:25-27):

“You, Lord, laid the foundation of the earth in the beginning,
            and the heavens are the work of your hands;
they will perish, but you remain;
            they will all wear out like a garment,
like a robe you will roll them up,
            like a garment they will be changed.
But you are the same,
            and your years will have no end.”

Do you worry that you lack things others have?  Things that would provide benefits for your business, spare time, or other pursuits?  With God as our fortress and refuge, we don’t need a river, but in Paradise He will provide one anyway.

Fret not, for you have God, our eternal river.