In Revelation 22, the trees leaves are for the “healing of the nations,” yet inRevelation 21 it is stated that there would be no more tears, etc. Revelation 22:3 says the curses have been removed. Could you explain why there would be a need to heal?

The verse tells us that in the midst of the street is the tree of life – indications of not just one tree but many of that same category lining the way. Every month this tree produces fruit in inexpressible abundance. The leaves are for the healing of the nations – ensuring health and immortality, not to heal illness because sickness is absent. Young’s Literal Translation reads, “In the midst of its broad place, and of the river on this side and on that, [is] a tree of life, yielding twelve fruits, in each several month rendering its fruits, and the leaves of the tree [are] for the service of the nations.” When Adam and Eve were rejected from the Garden of Eden cherubim and a flaming sword were placed at the east end so that they could not return and eat of the Tree of Life and live forever,Genesis 3:24. This future paradise will have nothing evil (v. 3) in it: There shall be no more curse, rather no accursed thing (Gr. Katanathema), including no serpent there as was in the Genesis paradise.