original sin, in Christian doctrine, the condition or state of sin into which each human being is born; also, the origin (i.e., the cause, or source) of this state. In the Gospels also there are no more than allusions to the notion of the Fall of Man and universal sin. ...

What exactly is original sin?

Original sin is an Augustine Christian doctrine that says that everyone is born sinful. This means that they are born with a built-in urge to do bad things and to disobey God. It is an important doctrine within the Roman Catholic Church.

What does Bible say about original sin?

1 John 1:8-10. 8 If we say we have no sin, we deceive ourselves, and the truth is not in us. 9 If we confess our sins, he is faithful and just to forgive us our sins and to cleanse us from all unrighteousness. 10 If we say we have not sinned, we make him a liar, and his word is not in us.