Luke records the words, Luke 8:14, of Jesus when he describes the cares and riches and pleasures of life, using the Greek word bios, life - the time on earth, the living on the planet. Luke also records the words of Abraham (recounted by Jesus) who uses the Greek word zoe to express the kind of life that the rich man had as he ate sumptuously every day within a gated compound, separate from the general public, Luke 16:25.
Zoe life - above and beyond just living on planet earth - a life of food and enrichment. But, in the rich man’s case, it could not last, for he died and was treated accordingly : as he had failed to share his privileges with the disease-ridden cripple left outside his gated compound by someone who - on a daily basis - left Lazarus there to beg.
John says that he that hath the Son hath life, zoe, I John 5:12, and he that hath not the Son of God hath not life. He also says that he that abideth in the doctrine of Christ hath both the Father and the Son, II John 9. Zoe life, a superior life to just existing.
So : abiding in the doctrine of Christ, one shall have the Son and thereby one shall have zoe life.
This life is further defined in other places as eternal life, for example in John 6:47 : He that believeth in me hath everlasting (eternal) life. The life that is received is eternal life, for the life is divine life.
This is the character of the life that is received. It is not a matter of duration for it was not possessed eternally : there was a point of time when this eternally existing life was received into union with the mortal being.
But there remains the problem of death. If the mortal being die, what of the eternal life within the immaterial soul ?
Paul explains the resolution by using the word immortality, athanasia, three times in scripture - twice in I Corinthians 15 : 53 and again 54, and once in I Timothy 6: 16.
This mortal, he says, shall put on immortality. In resurrection - or, for those alive at the time, in a change of state - an immortal humanity shall be put on that shall know no death. This is the human nature that will be given to those who already have eternal life, divine life, abiding in union with their own spiritual being.
Until he appears, who only possesses such immortality (a fact of his risen human nature) I Timothy 6: 14, only one has such immortality - the only Ruler, the King of Kings. But in his appearing, shall many be granted that same immortality. To as many as have already received him, in spirit, and believed on him in the doctrine of Christ, to these he shall give - also, as well as eternal life - immortality.