AIEC wrote:One is either righteous or wicked according to scripture, saved or unsaved, a child of God or a child of satan.
Righteous definition: Saved or unsaved.
Infants do not understand or believe in Jesus as their Savior. So they are not "saved" and are not "righteous" by the above definition.
AIEC wrote:Can you clarify on who they belong to and up to what point, biblicaly?
They "belong" to their parents in the USA. In some countries they may belong to the state or community. Biblically, they are human and can die like any other animal. When they die they rest in their graves awaiting their resurrection like any other dead human.
AIEC wrote: There is another interesting thought, why is Christ called the second Adam?
Are you speaking about the following verse?
1 Corinthians 15:45 wrote:So also is the resurrection of the dead. It is sown in corruption; it is raised in incorruption: It is sown in dishonor; it is raised in glory: it is sown in weakness; it is raised in power: It is sown a natural body; it is raised a spiritual body. There is a natural body, and there is a spiritual body. And so it is written, The first man Adam was a living soul; the last Adam was made a quickening spirit. (I Corinthians 15:42-45)
This is Paul's description of dead Christians being born again as spiritual beings during the first resurrection at the Second Coming.
The Christian body that is buried is corruptible, dishonored, weak, and a natural body (shown in
RED above). This is the physical body which is buried like a seed, or sown, when we die.
At the resurrection, Christians are raised up as incorruptible, glorified, powerful, spiritual bodies (shown in
GREEN above). This is exactly what the above verses state! Read them again several times if you must to confirm their simple truth.
Those humans who died believing in Jesus Christ will be born as spiritual beings at the first resurrection. Since this is their second birth, they are born again. The first man ever created was a living, breathing being or soul. The last being man can ever become will be a quickening spirit or spiritual body. It then goes on to say:
1 Corinthians 15:44-49 wrote:Howbeit that was not first which is spiritual, but that which is natural; and afterward that which is spiritual. The first man is of the earth, earthy; the second man is the Lord from heaven. As is the earthy, such are they also that are earthy: and as is the heavenly, such are they also that are heavenly. And as we have borne the image of the earthy, we shall also bear the image of the heavenly.
Matthew 18:3 wrote:Verily I say unto you, Except ye be converted, and become as little children, ye shall not enter into the kingdom of heaven.
AIEC wrote:You completely missed the point of the context, the little child was used as a representation of how God our father wants us, his children, to come to him, with humility.
"Except ye be converted, and become as little children." Christians will be converted from flesh and blood physical bodies to everlasting spiritual bodies. They are born a second time, or born again, and become sinless, just as little children are when born! This verse negates any inherited original sin. Neither humans nor sinners can enter the Kingdom of Heaven?
I Corinthians 15:50 wrote:Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God;...
No humans allowed!
I Corinthians 6:10-11 wrote:Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind, Nor thieves, nor covetous, nor drunkards, nor revelers, nor extortioners, shall inherit the kingdom of God. And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.
No sinners allowed!
We will enter the Kingdom of God as sinless immortal spiritual angels. We will still have freedom of choice, and can commit new sins after that -- as did Satan and 1/3 of the original angels who rebelled.
AIEC wrote:No problem, I understand. Lord bless you my friend.

Friend.
Darn good word! May the Lord continue to bless you also, my friend. Thanks for understanding.
NOTE: Working on the Romans Chapter 5 reply. This post is large enough.