the Greek word is from the root - zao (dzah'-o) actual word is zooeen from zoe (dzo-ay') The definition in Thayer's Greek lexicon is: "life real and genuine,...a life active and vigorous, devoted to God, blessed, the portion even in this world of those who put their trust in Christ, but after the resurrection to be consummated by new accessions (among them a more perfect body), and to last forever." "to be obtained in fellowship with Christ."
The Rev. David Brown write this:[Jesus states]"I came not to preserve a life already possessed, but to impart a life before unknown and to communicate it in a rich and unfailing exuberance."
That is a remarkable claim! Jesus is telling these Jewish leaders that this life is one of which they have never before even thought of. The idea that most Hebrews had of life was that of the sum of all the energies making up a man's existence. Therefore if the soul were to separate, then it ceased to have a fullness of life. See the term fullness of life? It is what Jesus says he is bringing. A life more abundant...what is this life that could be more?
Genesis 2:7 reads: "...the LORD God formed the man from the dust of the ground and breathed into his nostrils the breath of life, and the man became a living being.
This is the life Jesus was speaking of here, think now of Jesus words in Luke 19:10 "For (A)the Son of Man has come to seek and to save that which was lost." What is the "that which was lost" ? It is LIFE!
Adam and Eve sinned in the Garden, giving up the Tree of Life for the Tree of Knowledge of Good and Evil. They gave up the life of God beside them and within them. Now Jesus is announcing that the life they forfeited, the life that they gave over to their lust for knowledge, the life that Satan has conned them into giving over; is here and Christ is the bringer of this life.
John 1:4 states that "in Him was life" and it is only through a real and personnel communion with Christ; a walk that allows for Jesus to pour himself into the disciple, that we can take part.
So we partake of this life as we commune with Jesus, as we abandon ourselves to His will, and allow His Holy Spirit to transform us into His likeness. It is an offer that is available here and now. And an offer that will be made complete when we finally make it home.