God is unfair to blame us for Adam's sin

Why are we being punished for Adam's sin? After all, he ate the
forbidden fruit, we didn't. It's his problem, not ours, especially in
light of Deut. 24:16, which says children shall not be punished for the
sins of their fathers.

Biblical Errancy Pamphlets by Dennis McKinsey Pamphlet 1 Q2.

Answer:

The simple answer is that we suffer the consequences of Adam's sin, we are not punished by God for Adam's sin.

We are judged and punished for our own sin, not Adam's.

(Rev 20:12-13 NIV) And I saw the dead, great and small, standing before the throne, and books were opened. Another book was opened, which is the book of life. The dead were judged according to what they had done as recorded in the books. {13} The sea gave up the dead that were in it, and death and Hades gave up the dead that were in them, and each person was judged according to what he had done.

On p 190 of the Encyclopedia of Biblical Errancy Dennis McKinsey goes into more detail on original sin and the fall, and quotes Rom 5:12, which is the usual verse to be quoted on this particular difficulty.

(Rom 5:12 NIV) Therefore, just as sin entered the world through one man, and death through sin, and in this way death came to all men, because all sinned--

McKinsey goes on to say:

The idea that all people are to be punished because of an act of one, a relatively innocous act at that, borders on the bizarre and is a living refutation of any belief in a biblical God of justice and impartiality.

He continues to throw a temper tantrum (argument by outrage which is one of McKinsey's favorite tactics). He uses the word 'punished', which is not what Rom 5:12 says at all. He clearly thinks that disobedience against God is a trivial matter. Justice from God is not what we need, if we get justice we go to hell, we need mercy which Rom 5:15-21 goes on to talk about.

(Rom 5:15-21 NIV) But the gift is not like the trespass. For if the many died by the trespass of the one man, how much more did God's grace and the gift that came by the grace of the one man, Jesus Christ, overflow to the many! {16} Again, the gift of God is not like the result of the one man's sin: The judgment followed one sin and brought condemnation, but the gift followed many trespasses and brought justification. {17} For if, by the trespass of the one man, death reigned through that one man, how much more will those who receive God's abundant provision of grace and of the gift of righteousness reign in life through the one man, Jesus Christ. {18} Consequently, just as the result of one trespass was condemnation for all men, so also the result of one act of righteousness was justification that brings life for all men. {19} For just as through the disobedience of the one man the many were made sinners, so also through the obedience of the one man the many will be made righteous. {20} The law was added so that the trespass might increase. But where sin increased, grace increased all the more, {21} so that, just as sin reigned in death, so also grace might reign through righteousness to bring eternal life through Jesus Christ our Lord.

McKinsey is quite happy to focus on the negative side, but neglects the positive side. The purpose of Rom 5:12-21 is to contrast the resulting misery caused by the one man Adam with the resulting benefits caused by the one man Jesus Christ. Even this McKinsey complains about because he says 'now Jesus is punished for our deeds, which is also wrong' (p51). Clearly he doesn't recognise a good thing when he sees it. For the Christian the fact that Jesus died for our sins is good news, if its good enough for God it good enough for us.

Finally let me quote from Everett F Harrison (NIV Bible Commentary: Vol 2)

If one is still troubled by the seeming injustice of being born with a sinful nature because of what the father of the human race did and of being held accountable for sins resulting from that disability, one should weigh carefully the significance of the reconciliation statement of Paul: "that God was reconciling the world to himself in Christ, not counting men's sins against them" (2 Cor 5:19). The sins committed, that owe their original impetus to the sin of the first man, are not reckoned against those who have committed them if they put their trust in Christ crucified and risen. God takes their sins and gives them his righteousness. Would we not agree that this is more than a fair exchange?