Revelation 22:2

Overview - Revelation 22
The river of the water of life.
The tree of life.
The light of the city of God is himself.
The angel will not be worshipped.
18 Nothing may be added to the word of God, nor taken therefrom.
Treasury of Scripture Knowledge

Revelation 22:2  (King James Version)
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.

the midst
1 ; 21:21 Ezekiel 47:1 Ezekiel 47:12

the tree of life
Rather, the definite article not being in the original, "a tree of life;" for there were three trees; one in the street, and one on each side of the river.
14 ; 2:7 Genesis 2:9 ; 3:22-24 Proverbs 3:18

21:24 Psalms 147:3 ; Isaiah 6:10 ; Isaiah 57:18 Isaiah 57:19 Jeremiah 17:14 ; Ezekiel 47:8-11 ; Hosea 14:4
Malachi 4:2 ; Luke 4:18 ; 1 Peter 2:24