John 3:6

Whatever has been born of the flesh is flesh, and whatever has been born of the Spirit is spirit.

Romans 8:4-9

in order that in our case the requirements of the Law might be fully met. For our lives are regulated not by our earthly, but by our spiritual natures.

Galatians 5:16-21

This then is what I mean. Let your lives be guided by the Spirit, and then you will certainly not indulge the cravings of your lower natures.

John 1:13

who were begotten as such not by human descent, nor through an impulse of their own nature, nor through the will of a human father, but from God.

Romans 7:5

For whilst we were under the thraldom of our earthly natures, sinful passions-- made sinful by the Law--were always being aroused to action in our bodily faculties that they might yield fruit to death.

Romans 7:18

For I know that in me, that is, in my lower self, nothing good has its home; for while the will to do right is present with me, the power to carry it out is not.

Romans 7:25-1

Thanks be to God through Jesus Christ our Lord!)

Romans 8:13

For if you so live, death is near; but if, through being under the sway of the spirit, you are putting your old bodily habits to death, you will live.

1 Corinthians 6:17

But he who is in union with the Master is one with Him in spirit.

1 Corinthians 15:47-50

The first man is a man of earth, earthy; the second man is from Heaven.

2 Corinthians 5:17

So that if any one is in Christ, he is a new creature: the old state of things has passed away; a new state of things has come into existence.

Galatians 5:24

Against such things as these there is no law. Now those who belong to Christ Jesus have crucified their lower nature with its passions and appetites.

Ephesians 2:3

Among them all of us also formerly passed our lives, governed by the inclinations of our lower natures, indulging the cravings of those natures and of our own thoughts, and were in our original state deserving of anger like all others.

Colossians 2:11

In Him also you were circumcised with a circumcision not performed by hand, when you threw off your sinful nature in true Christian circumcision;

1 John 3:9

No one who is a child of God is habitually guilty of sin. A God-given germ of life remains in him, and he cannot habitually sin--because he is a child of God.

Treasury of Scripture Knowledge

Summary

That which is born of the flesh is flesh; and that which is born of the Spirit is spirit.

General references

Bible References

Born of the flesh

Romans 7:5
For whilst we were under the thraldom of our earthly natures, sinful passions-- made sinful by the Law--were always being aroused to action in our bodily faculties that they might yield fruit to death.
Romans 8:1
There is therefore now no condemnation to those who are in Christ Jesus;
1 Corinthians 15:47
The first man is a man of earth, earthy; the second man is from Heaven.
2 Corinthians 5:17
So that if any one is in Christ, he is a new creature: the old state of things has passed away; a new state of things has come into existence.
Galatians 5:16
This then is what I mean. Let your lives be guided by the Spirit, and then you will certainly not indulge the cravings of your lower natures.
Ephesians 2:3
Among them all of us also formerly passed our lives, governed by the inclinations of our lower natures, indulging the cravings of those natures and of our own thoughts, and were in our original state deserving of anger like all others.
Colossians 2:11
In Him also you were circumcised with a circumcision not performed by hand, when you threw off your sinful nature in true Christian circumcision;

General references

Mark 10:15
In solemn truth I tell you that no one who does not receive the Kingdom of God like a little child will by any possibility enter it."
1 Corinthians 6:17
But he who is in union with the Master is one with Him in spirit.