We're all familiar with the fact that Adam ate from the tree of the knowledge of good and evil. But, was that his only sin? Eating from the forbidden tree only violated a "positive law," which is a law that could have been something else and is not itself "moral."
But, think of all the moral laws Adam broke when he ate from the tree.
He broke the first and second commandment: You shall have no other gods before Me. And, no idols. By eating of the tree, Adam valued something over God and idolized the devil's false promise.
He broke the third commandment: You shall not take (or carry) God's name in vain. When Adam ate from the tree, he profaned God's name and reputation.
He broke the fourth commandment: Six days you shall work, but the seventh is the Sabbath. Whether Adam sinned on a workday or the Sabbath day, his sin violated the fourth command. If it was a workday, Adam was living idly and was distracted in the pursuit of something he should not have been pursuing. If it was the Sabbath day, Adam was not resting by faith in God, and he was not worshipping God as God required, but was pursuing a false form of worship.
He broke the fifth commandment: Honor your father and mother is about obeying authorities. God was Adam's father (Lk 3:38) and Adam directly disobeyed God's command.
He broke the sixth commandment: Do not murder. Adam watched as Eve murdered herself (by eating the fruit) and he murdered himself by eating the fruit.
He broke the seventh commandment: Do not commit adultery. Instead of defending, leading, protecting, and seeking the good of his wife, he and his wife both pursued satisfaction in an idol. This violates the positive aspect of the command, which relates to marital fidelity.
He broke the eighth commandment: Do not steal. God did not give Adam the tree of the knowledge of good and evil. Adam and Eve stole the fruit.
He broke the ninth commandment: Do not bear false witness. Adam's silence while Eve ate the fruit was pure deception. Adam refused to tell the truth to Eve in the moment she needed to hear it.
He broke the tenth commandment: Do not covet. Adam was not grateful for the Garden, for his wife, for life, or for sweet communion with God in the cool of the day. He was not content with what God had given him, but instead coveted godhood. Adam wanted to be God; so, he believed the devil's lie.
Adam broke each of the Ten Commandments when he ate of the tree of the knowledge of good and evil. James 2:10 says, “For whoever keeps the whole law but fails in one point has become accountable for all of it.”