Rev 2:7 “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.”
The “tree of life” reference here is an obvious reflection to the Garden of Eden, but Jesus isn’t actually saying that “believers will be fed from the actual tree of life that is ‘in’ the Garden of Eden.” You have to put this statement into context; this is being written to the seven churches – the seven candlesticks that John saw in his prophetic vision – and these churches are both commended for their good deeds and threatened for their works of evil that is being carried forth within them at the time of writing here.
What Jesus is saying to these churches is that while here on Earth, they need to persevere in the ways of righteousness and stand firm in the face of the evil within their midst, while constantly proclaiming the truth (love) of God’s Word. Simply put: discipleship.
The very same is said to all believers, as those filled with the Spirit are the body of Christ in the World; again, a calling to discipleship. This means that a Christian life isn’t a calling to a life of leisure and self-pleasure, but a life of selfless works, purpose and perseverance. And if we do these things, if we overcome, our rest – “eat at the tree of life” – and rewards will be found in the midst of the paradise of God.