Sin is described in the Bible as transgression of the law of God (1 John 3:4) and rebellion against God (Deuteronomy 9:7; Joshua 1:18). Sin had its beginning with Lucifer who, not content with his position, desired to be higher than God. Consequently, that was his downfall, and thus the beginning of sin (Isaiah 14:12-15). Renamed Satan, he brought sin to the human race in the Garden of Eden, where he tempted Adam and Eve with the same enticement, “you shall be like God.” Genesis 3 describes Adam and Eve’s rebellion against God and against His command. Since that time, sin has been passed down through all the generations of mankind and we, Adam’s descendants, have inherited sin from him. Romans 5:12 tells us that through Adam sin entered the world, and so death was passed on to all men because “the wages of sin is death” (Romans 6:23).
Through Adam, the inherent inclination to sin entered the human race, and human beings became sinners by nature. When Adam sinned, his inner nature was transformed by his sin of rebellion, bringing to him spiritual death and depravity which would be passed on to all who came after him. We are sinners not because we sin; rather, we sin because we are sinners. Just as we inherit physical characteristics from our parents, we inherit our sinful natures from Adam. King David lamented this condition of fallen human nature in Psalm 51:5: “Surely I was sinful at birth, sinful from the time my mother conceived me.”
The only just penalty for sin is death (Romans 6:23), not just physical death but eternal death (Revelation 20:11-15). Thankfully, sin has been crucified on the cross of Jesus, and now by faith in Jesus Christ as the Savior “we have redemption through His blood, the forgiveness of sins, according to the riches of His grace” (Ephesians 1:7).