Westminster Larger Catechism in modern English question number twenty-five:
Q. 25. In what does the sinfulness of the state into which mankind fell consist?
A. The sinfulness of the state into which mankind fell consists in the guilt of Adam’s first sin, the lack of the original righteousness in which he was created, and the corruption of his whole nature. Because of this, all mankind is utterly indisposed, made opposite to, and unable to do anything that is spiritually good. Also, all mankind is wholly and continually inclined to all evil. This is commonly called Original Sin; and from this comes all actual transgressions.