Although God created man upright and perfect, and gave him a righteous law, which secured life for him while he kept it, and although God warned him that he would die if he broke it, yet man did not live long in this honor. Satan, using the subtlety of the serpent to subdue Eve, seduced Adam by her, and he, without any compulsion, willfully transgressed the law of their creation and the command given to them by eating the forbidden fruit. And God, according to his wise and holy counsel, was pleased to permit this act, having purposed to order it to his own glory.
Our first parents, by this sin, fell from their original righteousness and communion with God, and we in them. For from this, death came upon all: all becoming dead in sin and wholly defiled in all the faculties and parts of soul and body.
They being the root, and by God’s appointment, standing in the room and stead of all mankind, the guilt of this sin was imputed, and their corrupted nature conveyed to all their posterity descending from them by ordinary generation. Their descendants are therefore conceived in sin, and are by nature the children of wrath, the servants of sin, and the subjects of death and all other miseries, spiritual, temporal, and eternal, unless the Lord Jesus sets them free.
All actual transgressions proceed from this original corruption, by which we are utterly indisposed, disabled, and made opposite to all good, and wholly inclined to all evil.
During this life the corruption of nature remains in those who are regenerated, and although it is pardoned and mortified through Christ, yet this corrupt nature and all its motions are truly and properly sinful.