That is not what John 3:16 meant.
John 3:16 means exactly what it states:
John 3:16
King James Version
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.
This is why you cannot present John 3:16 and show that there is something other than believing in Christ that leads to everlasting life.
You know it, I know it, and God knows it.
This is why Jesus spoke of Israel “doing truth” so that their “deeds may be made manifest” (John 3:21),
You might want to look at your proof text a little closer:
John 3:19-21
King James Version
19 And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
20 For every one that doeth evil hateth the light, neither cometh to the light, lest his deeds should be reproved.
21 But he that doeth truth cometh to the light, that his deeds may be made manifest, that they are wrought in God.
I don't see a contrast between what men do and don't do, it seems to me that the Basic Bible Principle that there is none good, no not one is reiterated.
What is the Light that came into the world, my friend?
Which men loved light rather than darkness?
Why do men stand under condemnation already if they do not do one thing...
John 3:18
King James Version
18 He that believeth on him is not condemned: but he that believeth not is condemned already, because he hath not believed in the name of the only begotten Son of God.
You are creating a false dichotomy among men, those who do good and those who do evil. Those who come to the light and those who do not.
You keep speaking about Israel, but we don't see Israel in John 3:16—we see the world.
And since not the first man is believing in Christ at this point because Christ has not been lifted up, we again see the principle that the entire world loves darkness rather than light.
John 3:19
King James Version
19 And this is the condemnation, that light is come into the world, and men loved darkness rather than light, because their deeds were evil.
So are you going to say that there were men that were righteous? God is wrong in His assessment that there are none good, not even one?
You are missing the fact that Christ's ministry has a two-fold application, one under Law, and one in which He redeems men from the Law.
Paul makes it clear there is a dividing line in History at the Cross of Christ:
Galatians 3:23-25
King James Version
23 But before faith came, we were kept under the law, shut up unto the faith which should afterwards be revealed.
24 Wherefore the law was our schoolmaster to bring us unto Christ, that we might be justified by faith.
25 But after that faith is come, we are no longer under a schoolmaster.
You need to better understand why Christ was made under the Law, and what that means to His earthly ministry to the Lost Sheep of Israel:
Galatians 4:4-6
King James Version
4 But when the fulness of the time was come, God sent forth his Son, made of a woman, made under the law,
5 To redeem them that were under the law, that we might receive the adoption of sons.
6 And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.
Then you too might be able to come into agreement with God and His Word and acknowledge that John 3:16 does not place any requirement upon the world other than that they believe in Jesus Christ:
John 3:16
King James Version
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.
Then you too might begin accomplishing what you are called to do: preach and teach the Gospel of Jesus Christ, not a gospel of works.
Continued...
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