Your question: What is the origin or root of sin?
The Bible teaches that all people are sinful because they are descendants of the first man, Adam, who fell into sin (see Genesis, ch.2-3). Adam, and his wife Eve, were created good and without sin, although they had the ability to choose sin. When they ate from the tree of the knowledge of good and evil, which God had forbidden, their human nature was corrupted.
The hearts became corrupted
Instead of loving God and doing what He wants, the hearts of Adam and Eve became corrupted, and from that point forward, they desired to disobey God rather than obey Him. The Westminster Shorter Catechism, a widely used instruction manual on the Christian faith dating from the 17th century, defines sin as “any lack of conformity unto, or transgression of, the law of God.”
Sinful nature of their children
Adam and Eve passed on a sinful nature to their children and to all their descendants (namely, all people). The Apostle Paul wrote that “by the one man’s disobedience the many were made sinners” (Rom 5:19). Because of our inherited sin from Adam, all people are “by nature, children of wrath” (Eph. 2:3). King David testifies, “Behold, I was brought forth in iniquity, and in sin did my mother conceive me.” (Psalm 51:5). He did not mean that his mother bore him out of wedlock, but rather that he was a sinner before he was even born. Because of our inherited sinful nature from Adam, all people therefore have “sinned and fall short of the glory of God” (Romans 3:23).
How does this Bible passage speak to you? Please share your thoughts below!
Also read Why does God hate sin?