Alright. So, what is my evidence and argument from the Scriptures that supports the position I hold, that the age of responsibility is different per person? The whole chapter of Romans 2.
Therefore you are inexcusable, O man, whoever you are who judge, for in whatever you judge another you condemn yourself; for you who judge practice the same things.But we know that the judgment of God is according to truth against those who practice such things.And do you think this, O man, you who judge those practicing such things, and doing the same, that you will escape the judgment of God?Or do you despise the riches of His goodness, forbearance, and longsuffering, not knowing that the goodness of God leads you to repentance?But in accordance with your hardness and your impenitent heart you are treasuring up for yourself wrath in the day of wrath and revelation of the righteous judgment of God,who “will render to each one according to his deeds”:eternal life to those who by patient continuance in doing good seek for glory, honor, and immortality;but to those who are self-seeking and do not obey the truth, but obey unrighteousness—indignation and wrath,tribulation and anguish, on every soul of man who does evil, of the Jew first and also of the Greek;but glory, honor, and peace to everyone who works what is good, to the Jew first and also to the Greek.For there is no partiality with God.For as many as have sinned without law will also perish without law, and as many as have sinned in the law will be judged by the law(for not the hearers of the law are just in the sight of God, but the doers of the law will be justified;for when Gentiles, who do not have the law, by nature do the things in the law, these, although not having the law, are a law to themselves,who show the work of the law written in their hearts, their conscience also bearing witness, and between themselves their thoughts accusing or else excusing them )in the day when God will judge the secrets of men by Jesus Christ, according to my gospel.Indeed you are called a Jew, and rest on the law, and make your boast in God,and know His will, and approve the things that are excellent, being instructed out of the law,and are confident that you yourself are a guide to the blind, a light to those who are in darkness,an instructor of the foolish, a teacher of babes, having the form of knowledge and truth in the law.You, therefore, who teach another, do you not teach yourself? You who preach that a man should not steal, do you steal?You who say, “Do not commit adultery,” do you commit adultery? You who abhor idols, do you rob temples?You who make your boast in the law, do you dishonor God through breaking the law?For “the name of God is blasphemed among the Gentiles because of you,” as it is written.For circumcision is indeed profitable if you keep the law; but if you are a breaker of the law, your circumcision has become uncircumcision.Therefore, if an uncircumcised man keeps the righteous requirements of the law, will not his uncircumcision be counted as circumcision?And will not the physically uncircumcised, if he fulfills the law, judge you who, even with your written code and circumcision, are a transgressor of the law?For he is not a Jew who is one outwardly, nor is circumcision that which is outward in the flesh;but he is a Jew who is one inwardly; and circumcision is that of the heart, in the Spirit, not in the letter; whose praise is not from men but from God. - Romans 2:1-29
http://www.biblegateway.com/passage/?search=Romans2:1-29&version=NKJV
I remember Bob explaining this passage, and the explanation he gave is what informed my position on this particular topic. I'm listening to his Bible study on Romans 2 as I type this out to see if I'm remembering correctly that he explained it there (and 15:20 in, I'm becoming more and more sure of it).
Paul was not speaking of those in the Body, and he's not speaking of those who have rejected the gospel.
He's speaking of those who have never heard any gospel message, from the time of Adam to this very day.
He's speaking of those without law who have never heard of Moses, Jesus, or Paul, of those without law who only know the law written on their hearts.
If you have the Romans Bible study, I recommend listening to it before continuing to read, at least from about 14 minutes in or so.
Bob quotes Luke 12:48, which says:
But he who did not know, yet committed things deserving of stripes, shall be beaten with few. For everyone to whom much is given, from him much will be required; and to whom much has been committed, of him they will ask the more. - Luke 12:48
http://www.biblegateway.com/passage/?search=Luke12:48&version=NKJV
Hmm, that doesn't sound like an age restriction of 20 years old and older to me, even given the context, which was the parable of the faithful servant and the evil servant.
But it's an important principle that I think Lion, the person you're quoting, completely missed.
"To whom much is given, much will be required." Meaning that if someone is given a responsibility, and they do not maintain their responsibility, then they are accountable for their actions. And if they are not given something, then they are not accountable for it. Maybe you can see where I'm going with this.