“None is righteous, no, not one; no one understands; no one seeks for God. All have turned aside; together they have become worthless; no one does good, not even one.”

“Their throat is an open grave; they use their tongues to deceive.”

“The venom of asps is under their lips.”

“Their mouth is full of curses and bitterness.”

“Their feet are swift to shed blood; in their paths are ruin and misery, and the way of peace they have not known.”

“There is no fear of God before their eyes.”
 (Rom. 3:10–18)

This is what it looks like to be “dead” in trespasses and sins (Eph. 2:1). All sin is rooted in failing to glorify God as “the true God and our God” (Westminster Shorter Catechism 47). It is bad to be sinners before a holy God, but it is even worse to be unaware of who we are and why we need Christ to save us.

However, the Bible not only teaches that we are born dead in sin, that we are averse to living for God’s glory, and that we are inclined to evil, but it also teaches that all humanity died in Adam because all sinned in Adam (Rom. 5:12, 15, 19; 1 Cor. 15:22). This is what the church has called original sin. In order to understand this truth, I will show what original sin means and how it leads to all actual sins that we commit against God’s law. I will use Westminster Larger Catechism questions 24–26 to help us think through Scripture on the nature of sin and original sin. These issues are important because without understanding the nature, depths, and extent of our ruin, we cannot understand the glory of God’s remedy for sin in Christ.

What Is Sin?¹

Before considering original sin, it is important to ask what sin is. For some people, sin means “brokenness” or “poor choices.” This misses the mark, focusing on the effects of sin on our lives rather than on the nature of sin itself. The Apostle John wrote, “Sin is lawlessness” (1 John 3:4). While we can understand “brokenness” or “poor choices” without referring to God, we cannot understand sin without God and His law. It is not stones and trees or even animals that break God’s law but human and angelic beings.

We break God’s law negatively and positively. Negatively, sin is “want of conformity unto” the law. The First Catechism defines “want of conformity” as “not being or doing what God requires.”² We should love God supremely, and we should love Him while we love others and above others. Failing to be worshipers and servants of the true God, trusting in Christ as our Savior, and depending on the Spirit to trust and obey God makes everything we think, do, or say sinful by definition.