I am of the opinion that all Biblical references to overcoming are to be applied to Israel and not the Body of Christ.
The book of Revelation concerns Israel.
Revelation 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 will be found in the new Jerusalem, the future earthly city of Israel.
Revelation 21:2 And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.
The body of Christ has a future in the heavenly places not the earthly.
Ephesians 1:3 Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ:
It is for Israel to reign over the nations on earth.
Revelation 2:26 And he that overcometh, and keepeth my works unto the end, to him will I give power over the nations:
Revelation 5:10 And hast made us unto our God kings and priests: and we shall reign on the earth.
The book of life is for Israel.
Revelation 3:5 He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels.
Revelation 21:27 below refers, once again to the new Jerusalem on earth.
Revelation 21:27 And there shall in no wise enter into it any thing that defileth, neither whatsoever worketh abomination, or maketh a lie: but they which are written in the Lamb's book of life.
Revelation 3:12 Him that overcometh will I make a pillar in the temple of my God, and he shall go no more out: and I will write upon him the name of my God, and the name of the city of my God, which is new Jerusalem, which cometh down out of heaven from my God: and I will write upon him my new name.
To him that overcometh will be granted to sit on the throne.
Revelation 3:21 To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne.
To sit on thrones was allocated to the Jews.
Matthew 19:28 And Jesus said unto them, Verily I say unto you, That ye which have followed me, in the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel.
He that overcometh shall obtain the inheritance.
Revelation 21:7 He that overcometh shall inherit all things; and I will be his God, and he shall be my son.
Believing Israel, the little flock, will inherit the kingdom.
Luke 12:32 Fear not, little flock; for it is your Father's good pleasure to give you the kingdom.
1 John is written to believing Israel.
1John 5:1 1 Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.
For eternal life, Israel had to believe on the name of Jesus, that he was Christ, the Son of God (John 20:31).
1John 5:4-5 4 For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, [even] our faith. 5 Who is he that overcometh the world, but he that believeth that Jesus is the Son of God?
The Israel of faith will overcome.
The book of Revelation concerns Israel.
Revelation 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 will be found in the new Jerusalem, the future earthly city of Israel.
Revelation 21:2 And I John saw the holy city, new Jerusalem, coming down from God out of heaven, prepared as a bride adorned for her husband.
The body of Christ has a future in the heavenly places not the earthly.
Ephesians 1:3 Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ:
It is for Israel to reign over the nations on earth.
Revelation 2:26 And he that overcometh, and keepeth my works unto the end, to him will I give power over the nations:
Revelation 5:10 And hast made us unto our God kings and priests: and we shall reign on the earth.
The book of life is for Israel.
Revelation 3:5 He that overcometh, the same shall be clothed in white raiment; and I will not blot out his name out of the book of life, but I will confess his name before my Father, and before his angels.
Revelation 21:27 below refers, once again to the new Jerusalem on earth.
Revelation 21:27 And there shall in no wise enter into it any thing that defileth, neither whatsoever worketh abomination, or maketh a lie: but they which are written in the Lamb's book of life.
Revelation 3:12 Him that overcometh will I make a pillar in the temple of my God, and he shall go no more out: and I will write upon him the name of my God, and the name of the city of my God, which is new Jerusalem, which cometh down out of heaven from my God: and I will write upon him my new name.
To him that overcometh will be granted to sit on the throne.
Revelation 3:21 To him that overcometh will I grant to sit with me in my throne, even as I also overcame, and am set down with my Father in his throne.
To sit on thrones was allocated to the Jews.
Matthew 19:28 And Jesus said unto them, Verily I say unto you, That ye which have followed me, in the regeneration when the Son of man shall sit in the throne of his glory, ye also shall sit upon twelve thrones, judging the twelve tribes of Israel.
He that overcometh shall obtain the inheritance.
Revelation 21:7 He that overcometh shall inherit all things; and I will be his God, and he shall be my son.
Believing Israel, the little flock, will inherit the kingdom.
Luke 12:32 Fear not, little flock; for it is your Father's good pleasure to give you the kingdom.
1 John is written to believing Israel.
1John 5:1 1 Whosoever believeth that Jesus is the Christ is born of God: and every one that loveth him that begat loveth him also that is begotten of him.
For eternal life, Israel had to believe on the name of Jesus, that he was Christ, the Son of God (John 20:31).
1John 5:4-5 4 For whatsoever is born of God overcometh the world: and this is the victory that overcometh the world, [even] our faith. 5 Who is he that overcometh the world, but he that believeth that Jesus is the Son of God?
The Israel of faith will overcome.
