Wherein consists the sinfulness of that estate whereinto man fell?
The sinfulness of that estate whereinto man fell, consists in the guilt of Adam’s first sin, the want of original righteousness, and the corruption of his whole nature, which is commonly called Original Sin; together with all actual transgressions which proceed from it.
“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.” Romans 5:19
“As for you, you were dead in your transgressions and sins, in which you used to live when you followed the ways of this world and of the ruler of the kingdom of the air, the spirit who is now at work in those who are disobedient. All of us also lived among them at one time, gratifying the cravings of our sinful nature and following its desires and thoughts. Like the rest, we were by nature objects of wrath.” Ephesians 2:1-3
“…but each one is tempted when, by his own evil desire, he is dragged away and enticed. Then, after desire has conceived, it gives birth to sin; and sin, when it is full-grown, gives birth to death.” James 1:14-15
“For out of the heart come evil thoughts, murder, adultery, sexual immorality, theft, false testimony, slander.” Matthew 15:19