Revelation 2:1 Unto the angel of the church of Ephesus write; These things saith he that holdeth the seven stars in his right hand, who walketh in the midst of the seven golden candlesticks; 2 I know thy works, and thy labour, and thy patience, and how thou canst not bear them which are evil: and thou hast tried them which say they are apostles, and are not, and hast found them liars: 3 And hast borne, and hast patience, and for my name's sake hast laboured, and hast not fainted. 4 Nevertheless I have somewhat against thee, because thou hast left thy first love. 5 Remember therefore from whence thou art fallen, and repent, and do the first works; or else I will come unto thee quickly, and will remove thy candlestick out of his place, except thou repent. 6 But this thou hast, that thou hatest the deeds of the Nicolaitanes, which I also hate. 7 He that hath an ear, let him hear what the Spirit saith unto the churches; To him that overcometh will I give to eat of the tree of life, which is in the midst of the paradise of God.
I know that it is contentious because it does seem to read as addressing the him that overcometh as being a believer and not Jesus as "I" being God is giving the right to that overcomer to the tree of life, however, believing in Jesus Christ is how He overcomes for us.
Barring that belief, is the consequence for not heeding the warning to that church; thus the need for Him to overcome for that believer.
Now look at the reward. How can it be for the firstfruit of the resurrection that need to eat from the tree of life which is in the midst of the paradise of God aka the City of God aka New Jerusalem? What happened to this promise of that first fruit of the resurrection?
Luke 20:34 And Jesus answering said unto them, The children of this world marry, and are given in marriage. 35 But they which shall be accounted worthy to obtain that world, and the resurrection from the dead, neither marry, nor are given in marriage: 36 Neither can they die any more: for they are equal unto the angels; and are the children of God, being the children of the resurrection.
So the first fruit of teh resurrection would have no need to eat from the tree of life.
So if it is a believer that is the overcomer, how come he needs to eat from the tree of life unless he was one of the saints left behind or one of the new believers after the pre great trib rapture event for why Jesus is the actual Overcomer for that believer to be received.
Let us look at what the tree of life is for.
Revelation 22:1 And he shewed me a pure river of water of life, clear as crystal, proceeding out of the throne of God and of the Lamb. 2 In the midst of the street of it, and on either side of the river, was there the tree of life, which bare twelve manner of fruits, and yielded her fruit every month: and the leaves of the tree were for the healing of the nations.
4 And they shall see his face; and his name shall be in their foreheads. 5 And there shall be no night there; and they need no candle, neither light of the sun; for the Lord God giveth them light: and they shall reign for ever and ever.
So the leaves of the tree of life are for the healing of the nation which means that places this city of God on earth.
Revelation 21:1And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea. 2 And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband. 3 And I heard a great voice out of heaven saying, Behold, the tabernacle of God is with men, and he will dwell with them, and they shall be his people, and God himself shall be with them, and be their God. 4 And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away.
5 And he that sat upon the throne said, Behold, I make all things new. And he said unto me, Write: for these words are true and faithful.
So I see the reward for those that did not heed His warning for why Jesus will overcome for that saint that gets left behind to eat from the tree of life while the coming generations will visit the city of God to eat the leaves for the healing of the nations.
It is contentious to see "him" that overcomes, as being the believer, and in some way it is addressing the believer but I still see Jesus in Him as overcoming for that believer when that reward is not what that believer earned but because of what Jesus had done for him. By believing in Him is how he overcomes even though left behind or has become a new believer after the rapture, but stuck on earth.
The reason I put the emphasis on Him as the Overcomer is because believers may refuse how a saint that got disqualified can get any reward when left behind, but if you think about it.
John 6:39 And this is the Father's will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day. 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.
That would explain how new believers after the rapture, can also have access to the tree of life.