Why Did Jesus Have to Die for Our Sins?

(Editorial note: This post was adapted from the sermon manuscript and transcript written and preached by Pastor Chris on Sunday, July 5, 2026 with the assistance of AI.)

Why Did Jesus Have to Die for Our Sins?

It's a question most people learn to answer with a phrase before they ever really wrestle with it. "He died for our sins." True enough, but it doesn't explain much on its own. Why did God require a death at all? Why not simply forgive?

That question sits at the center of Christian faith, and it deserves more than a quick answer.

The Story Starts With a Promise

The earliest hint of an answer shows up all the way back in Genesis, right after humanity's first rebellion against God. Speaking to the serpent, God says, "And I will put enmity between you and the woman, and between your offspring and hers; he will crush your head, and you will strike his heel" (Genesis 3:15, NIV).

Buried in that curse is a promise: someone is coming who will defeat evil, though it will cost him something painful to do it. That someone doesn't show up right away. Instead, the rest of the Old Testament drops hints. He'll come from David's family line. He'll be anointed by God's Spirit. He'll be the suffering servant. Every description carries the same undertone, that whoever this is, defeating evil is going to hurt.

Why Sin Is a Bigger Problem Than People Admit

To understand why Jesus's death mattered, it helps to understand what actually broke in the first place. God made the world with humans as caretakers, ruling on his behalf and living in harmony with him. That harmony didn't last. Humans decided they'd rather set their own terms for right and wrong than trust the one who made them.

The consequence was death itself: "Until you return to the ground, since from it you were taken, for dust you are and to dust you will return" (Genesis 3:19, NIV). Paul later summarizes the same reality in blunt terms: "For all have sinned and fall short of the glory of God" (Romans 3:23, NIV).

Sin, in this sense, isn't just an occasional bad choice. It's a fundamental decision to be one's own authority, and its effects touch everything: relationships, purpose, and a person's connection to God.

Why Did Jesus Have to Die? The Logic of Sacrifice

This is where the question actually gets answered, and it starts with Israel's sacrificial system. Once a year, the high priest would offer a sacrifice on behalf of the whole nation: "He shall then slaughter the goat for the sin offering for the people and take its blood behind the curtain... In this way he will make atonement" (Leviticus 16:15-16, NIV).

Blood mattered because life mattered. Ancient Israel understood sin as something that contaminated everything it touched, deep enough that only death could deal with it honestly. But that yearly sacrifice was never a permanent fix. It had to be repeated, "again and again," because it "can never take away sins" (Hebrews 10:11, NIV).

Jesus changes that. Scripture describes his death as the one sacrifice that finally worked: "By one sacrifice he has made perfect forever those who are being made holy" (Hebrews 10:14, NIV). Rather than another repetition, his death functions as the final one.

Jesus as the Final Sacrifice and the New Passover Lamb

The New Testament adds another layer to this picture. Paul writes, "For Christ, our Passover lamb, has been sacrificed" (1 Corinthians 5:7, NIV), pointing back to the story of the Exodus, when a lamb's blood on a doorframe protected a household from death. Jesus's death accomplishes something similar, permanently, for anyone who trusts him.

He didn't stumble into this. Before his arrest, Jesus told his followers plainly what was coming: "The Son of Man must suffer many things and be rejected... and that he must be killed and after three days rise again" (Mark 8:31, NIV). And it happened just as he said, ending with his final cry from the cross (Mark 15:33-37, NIV).

What the Resurrection Actually Accomplished

The cross deals with sin's effect. The resurrection deals with something else: the power behind it. Before his death, Jesus was already confronting spiritual evil directly, healing the sick and freeing people from demonic oppression, telling onlookers, "If it is by the Spirit of God that I drive out demons, then the kingdom of God has come upon you" (Matthew 12:28, NIV).

The resurrection finishes that work. Paul describes it as a decisive turning point: "Death has been swallowed up in victory. Where, O death, is your victory? Where, O death, is your sting? The sting of death is sin, and the power of sin is the law. But thanks be to God! He gives us the victory through our Lord Jesus Christ" (1 Corinthians 15:54-57, NIV).

What This Means for Everyday Life

None of this is meant to stay theoretical. If sin's power has genuinely been broken, that changes how a person can live. Freedom from sin doesn't mean the absence of struggle, but it does mean sin no longer has to be the defining force in someone's life or identity.

Even so, an honest question remains: if sin and death have already been defeated, why do they still show up in daily life? That tension is worth sitting with rather than resolving too quickly, and it's the exact question this sermon series picks back up next.

[Watch the full sermon here.]