In the other thread, hopefully, we can come to a conclusion concerning whether men had eternal life in the Old Testament as we look at those issues surrounding New Birth. I hold to the view that eternal life began with Christ primarily because that is what Christ states He came to bestow, and as we look at the New Testament we begin to see this made clear. For example:
John 6:49-53 King James Version (KJV)
49 Your fathers did eat manna in the wilderness, and are dead.
50 This is the bread which cometh down from heaven, that a man may eat thereof, and not die.
51 I am the living bread which came down from heaven: if any man eat of this bread, he shall live for ever: and the bread that I will give is my flesh, which I will give for the life of the world.
52 The Jews therefore strove among themselves, saying, How can this man give us his flesh to eat?
53 Then Jesus said unto them, Verily, verily, I say unto you, Except ye eat the flesh of the Son of man, and drink his blood, ye have no life in you.
The "life" He speaks of is associated with the True/Living Bread (Himself) coming down from HEaven. We wouldn't impose this into the timeframe of the Wilderness and would have to exclude men receiving this bread because manna was the provision given. Manna sustained physical life whereas the True/Living Bread sustains Eternal Life, hence the many statements about men not dying. And this contrasted with the fathers being dead, or in other words...they did not receive this life at that time.
We see it in numerous familiar texts:
John 5:24 King James Version (KJV)
24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.
John 3:15-16 King James Version (KJV)
15 That whosoever believeth in him should not perish, but have eternal life.
16 For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
John 6:40
And this is the will of him that sent me, that every one which seeth the Son, and believeth on him, may have
everlasting life: and I will raise him up at the last day
Now two things we have to clarify in our hearts in order to understand this is 1) no man was believing on Christ as the Risen Savior (which is how men are saved in this Age and become sons of God) and 2) no man had received the Promised Spirit. And it is through believing the Gospel of Christ (which was a mystery, truth not revealed to men in past Ages (Ephesians 3:2-5; Colossians 1:25-27; Romans 16:26-27) that men receive the Promised Spirit:
Ezekiel 36:24-27 King James Version (KJV)
24 For I will take you from among the heathen, and gather you out of all countries, and will bring you into your own land.
25 Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you.
26 A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.
27 And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.
John 16:7 King James Version (KJV)
7 Nevertheless I tell you the truth; It is expedient for you that I go away: for if I go not away, the Comforter will not come unto you; but if I depart, I will send him unto you.
John 4:14
But whosoever drinketh of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into
everlasting life.
Ezekiel 36:24-27 King James Version (KJV)
24 For I will take you from among the heathen, and gather you out of all countries, and will bring you into your own land.
25 Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you.
26 A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.
27 And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.
Acts 1:4-5 King James Version (KJV)
4 And, being assembled together with them, commanded them that they should not depart from Jerusalem, but
wait for the promise of the Father, which, saith he, ye have heard of me.
5
For John truly baptized with water; but ye shall be baptized with the Holy Ghost not many days hence.
So having eternal life is a result of being placed in Christ. John 14:15-23 teaches that the indwelling of the Father (v.23 and implied in v.20), Son (vv.18, 20, and 23), and the Holy Ghost (vv.16-17) is a future event, meaning the disciples were not in Him and He was not in them until Pentecost. That is the moment of salvation according to Peter and the Jews He recounts the conversion of Cornelius to:
Acts 11:13-18 King James Version (KJV)
13 And he shewed us how he had seen an angel in his house, which stood and said unto him, Send men to Joppa, and call for Simon, whose surname is Peter;
14
Who shall tell thee words, whereby thou and all thy house shall be saved.
15
And as I began to speak, the Holy Ghost fell on them, as on us at the beginning.
16
Then remembered I the word of the Lord, how that he said, John indeed baptized with water; but ye shall be baptized with the Holy Ghost.
17 Forasmuch then as
God gave them the like gift as he did unto us, who believed on the Lord Jesus Christ; what was I, that I could withstand God?
18 When they heard these things, they held their peace, and glorified God, saying,
Then hath God also to the Gentiles granted repentance unto life.
So there are numerous issues we have to discuss in order to bring the conclusion concerning whether men had eternal life in the Old Testament.
As to what would have killed Adam, remember that not all death is the result of sin. We can't make the fact that death is the wage of sin into a concept that only sin can kill. Adam could have died in an accident, for example. But that doesn't change the fact that his provision for not dying-which equates to everlasting life in the physical sense-was the Tree of Life. That is why God thrust him out, that he would no longer have access and thus "live forever:"
Genesis 3:22-23 King James Version (KJV)
22 And the Lord God said, Behold, the man is become as one of us, to know good and evil: and now,
lest he put forth his hand, and take also of the tree of life, and eat, and live for ever:
23 Therefore the Lord God sent him forth from the garden of Eden, to till the ground from whence he was taken.
God bless.