'Tree of Life' in the Bible

"The person who has an ear should listen to what the Holy Spirit is saying to the churches. To the person who has victory [in the Christian life] I will give [the opportunity] to eat from the tree of life, which is in the Paradise of God." [Note: "Paradise" is equivalent to heaven. See II Cor. 12:4].

and down the middle of the city's street. And on each side of the river stood the tree of life; it produced twelve crops of fruit, yielding a crop every month. And the leaves of the tree [served as medicine] for healing the nations.

Those who wash their robes are blessed because [then] they will have the right to [eat from] the tree of life, and will [be able to] enter the city through the gates.

And if anyone takes away from the words of this book of prophecy, God will take away his share in the tree of life and in the holy city, which are described in this book.