Ephesians 2:3 does not say BORN.
Eph 2:1 And you hath he quickened, who were dead in trespasses and sins;
Eph 2:2 Wherein
in time past ye walked according to the course of this world, according to the prince of the power of the air, the spirit that now worketh in the children of disobedience:
Eph 2:3 Among whom also
we all had our conversation in times past in the lusts of our flesh, fulfilling the desires of the flesh and of the mind; and were by nature the children of wrath, even as others.
Nature in the Greek is this...
Nature - G5449 -phusis
From G5453; growth (by germination or expansion), that is, (by implication) natural production (lineal descent); by extension a genus or sort; figuratively native disposition, constitution or usage: - ([man-]) kind, nature ([-al]).
Paul also wrote this...
Rom 2:14 For when the Gentiles, which have not the law,
do by nature the things contained in the law, these, having not the law, are a law unto themselves:
Rom 2:15 Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another
Nature can go either way. A human being is not born wicked, that is a false teaching. Human beings are born in an ignorant state subject to the passions of the flesh but God imbues all people with the light of conscience.
Joh 1:9 That was the true Light,
which lighteth every man that cometh into the world.
Tit 2:11 For
the grace of God that bringeth salvation hath appeared to all men,
Tit 2:12 Teaching us that, denying ungodliness and worldly lusts, we should live soberly, righteously, and godly, in this present world;
People SELL themselves into the bondage of sin when they CHOOSE to suppress the light and yield to unrighteousness.
Isa_52:3 For thus saith the LORD,
Ye have sold yourselves for nought; and ye shall be redeemed without money.
Rom 6:16 Know ye not, that
to whom ye yield yourselves servants to obey, his servants ye are to whom ye obey; whether of sin unto death, or of obedience unto righteousness?
Thus the NATURE of Ephesians 2:3 is a nature which has developed over the continued action of practicing sin. Sinful action hard wires itself into the brain because sin brings pleasure and the neuro-transmitters fire off.
God designed us to become addicted to him as opposed to becoming addicted to sin. God wants us to be slaves of righteousness and not slaves of sin. We get to CHOOSE this day whom we will serve.
When we yield to God from the heart God empowers us and quickens our MORTAL BODY as we become ADDICTED to God.
Act 13:48 And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were
ordained to eternal life believed.
1Co 16:15 I beseech you, brethren, (ye know the house of Stephanas, that it is the firstfruits of Achaia, and that they have
addicted themselves to the ministry of the saints,)
Ordain/Addicted -G5021 -tassō
A prolonged form of a primary verb (which latter appears only in certain tenses); to arrange in an orderly manner, that is, assign or dispose (to a certain position or lot): - addict, appoint, determine, ordain, set.
Your fallacy is that you don't see NATURE as going both ways. In your mind human nature is ONLY EVIL. Yet Paul uses the SAME WORD to describe DOING THE RIGHT THING.
A Christian is to partake in the DIVINE NATURE having ESCAPED the corruption of lust. When one is in bondage to lust it renews the nature to evil.
2Pe 1:3 According as his divine power hath given unto us all things that pertain unto life and godliness, through the knowledge of him that hath called us to glory and virtue:
2Pe 1:4 Whereby are given unto us exceeding great and precious promises: that by these
ye might be partakers of the divine nature, having escaped the corruption that is in the world through lust.
Dig into these things.