@justbyfaith You need to differentiate between sinning, and sin. The act of sinning, and the sin nature. We stand condemned not because we have a sinful nature, but because as you quoted above, "all have
sinned and come short of the glory of God". You will not a find a verse anywhere that says we are lost because we are born with a nature that tends to sin.
If what you are saying is true, what do we need to even repent of? We are in favour with God from birth; and that would mean that we are without sin from birth. No need for repentance then.
Of course we are in favour with God...if by that you mean He loves us...but we transgress anyway don't we? We sin. Thus we need to repent. Just because God favours us (whatever you mean by that) is a huge leap to being without sin. And what do you mean, "without sin"? We have a sin nature, a fallen corrupt nature...carnal, fleshly, apt to sin and having the propensity to sin constantly which we have to war against to overcome yes? But do we actually sin from birth? Does it mean someone born into a family of thieves is a thief? Sure, the likelihood of his becoming a thief at some stage is exponentially more likely than if he was born into a family of Buddhist monks for example, but he is not going to be condemned for thievery
until he actually steals something.
Put it this way. Adam and Eve were warned that if they disobeyed,
that day, they would die. Why didn't they die that day? Because Jesus stepped in and said, I will take their sin upon Myself and be a propitiation for them. Thus He was the Lamb slain from the foundation of the world. The moment the human race stood condemned, Jesus changed that whole paradigm. Think about the verse you quoted in the beginning to support your entire case for birth-Adam inherited-condemnation.
Romans 5:18
Therefore as by the offence of one judgment came upon all men to condemnation;...but if that be true, and indeed it most assuredly is, then must not the rest of that very same verse be equally true????
even so by the righteousness of one the free gift came upon all men unto justification of life.
Think upon this also....Romans 5:10
For if, when we were enemies, we were reconciled to God by the death of His Son...When did this reconciliation take place? At Calvary, or in the Garden?
Think also in that context on the several other verse in the same section of Romans 5 dealing with the same topic...the contrast between what we inherited from Adam, and what we receive from the second Adam....
15 But not as the offence, so also is the free gift. For if through the offence of one many be dead, much more the grace of God, and the gift by grace, which is by one man, Jesus Christ, hath abounded unto many.
16 And not as it was by one that sinned, so is the gift: for the judgment was by one to condemnation, but the free gift is of many offences unto justification.
17 For if by one man’s offence death reigned by one; much more they which receive abundance of grace and of the gift of righteousness shall reign in life by one, Jesus Christ.)
18 Therefore as by the offence of one judgment came upon all men to condemnation; even so by the righteousness of one the free gift came upon all men unto justification of life.
19 For as by one man’s disobedience many were made sinners, so by the obedience of one shall many be made righteous.
20 Moreover the law entered, that the offence might abound. But where sin abounded, grace did much more abound:
21 That as sin hath reigned unto death, even so might grace reign through righteousness unto eternal life by Jesus Christ our Lord.
If Christ had not stepped in to intercede
in the garden, Adam and Eve would have died, and the entire human race with them.
That corporate condemnation was set aside by Christ, in order to give all men a second chance...a deferment of the sentence of death to give mankind the opportunity to choose whom they should serve. Christ, or Satan.
This does not remove the need for repentance, but the opposite, it gave us the opportunity for repentance.