Original sin is the doctrine that all humans inherit Adam's fallen nature and are born with a sinful disposition (Romans 5:12). The fairness objection is real, but so is the parallel doctrine: just as we inherit Adam's curse, we can inherit Christ's righteousness (Romans 5:17-19). The way out is open to all.
“Wherefore, as by one man sin entered into the world, and death by sin; and so death passed upon all men, for that all have sinned.”
“For if by one man's offence death reigned by one; much more they which receive abundance of grace... so by the obedience of one shall many be made righteous.”
“Behold, I was shapen in iniquity; and in sin did my mother conceive me.”
“And were by nature the children of wrath, even as others.”
“For as in Adam all die, even so in Christ shall all be made alive.”
“Cursed is the ground for thy sake... Till thou return unto the ground.”
“It is unjust to inherit Adam's guilt.”
The same principle of representation works in the gospel — we inherit Christ's righteousness as our federal head. If representation is unfair in Adam's case, it is unfair in Christ's case too. The same mechanism that creates the problem creates the solution. The Bible holds both together.
“Babies haven't done anything wrong.”
Christians have wrestled with this. Most affirm babies are not personally guilty of specific sins but share in the fallen human nature. Various views exist on how God deals with those who die in infancy. Most evangelical traditions trust God's mercy and the work of Christ. Don't make the doctrine of original sin imply babies suffer for what they didn't do.
“I don't feel guilty for Adam's sin.”
The doctrine doesn't say you feel personally guilty for Adam's specific act. It says you inherit a sinful nature and live in a fallen world. Look at your own life: do you naturally do what is right? Or do you struggle with selfishness, anger, lust, pride? The empirical evidence supports the doctrine.
Original sin explains the universal human experience of moral brokenness. The objection about fairness assumes radical individualism; biblical anthropology is more communal. The same principle by which we share Adam's fall — federal headship — is the principle by which we share Christ's redemption. Don't reject the diagnosis; receive the cure.
Original sin is the doctrine that all humans inherit Adam's fallen nature and are born with a sinful disposition. Romans 5:12 — through Adam, sin and death entered humanity. The doctrine has two aspects: (1) inherited corruption (we are born with a sinful nature) and (2) inherited guilt (we are accounted with Adam's sin as our federal head). Christians differ on the details but agree on the core: humans are not born morally neutral.
Romans 5:12-21 is the key text — 'by one man sin entered into the world.' Psalm 51:5 — 'in sin did my mother conceive me.' Ephesians 2:3 — 'by nature the children of wrath.' 1 Corinthians 15:22 — 'as in Adam all die.' Genesis 3 records the Fall. The doctrine is not just from one verse but woven through Scripture.
Most Christians say no. Christians have wrestled with this. The Bible does not explicitly answer. Most evangelical traditions affirm God's mercy and trust him with those who die in infancy or before the age of accountability. 2 Samuel 12:23 — David said of his deceased infant: 'I shall go to him, but he shall not return to me' — taken by many as hopeful. Trust God's justice and mercy.
Through faith in Jesus Christ. Romans 5:17-19 — 'as by one man's disobedience many were made sinners, so by the obedience of one shall many be made righteous.' Christ is the second Adam. United to him by faith, you are reckoned righteous. Original sin is undone by original grace through the second Adam. Trust Christ.