1 John 1:5-10
5This is the message we have heard from him and proclaim to you, that God is light and in him there is no darkness at all. 6If we say that we have fellowship with him while we are walking in darkness, we lie and do not do what is true; 7but if we walk in the light as he himself is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.
8If we say that we have no sin, we deceive ourselves, and the truth is not in us. 9If we confess our sins, he who is faithful and just will forgive us our sins and cleanse us from all unrighteousness. 10If we say that we have not sinned, we make him a liar, and his word is not in us.
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One of the cool things God does in scripture is give us different ways of looking at things. If you have trouble connecting with Paul’s writing, maybe John will help you see things in a different light.
In this section John is making two basic points: we’re all sinners in need of God’s grace, and our faith calls us to live differently, to leave sin behind. These two truths are woven together because following Jesus pushes us to do better, but it also reminds us how far we still have to go. The other connection that brings our sin and our calling together is that Jesus’ blood cleanses us from sin, moving us from darkness to light.
John talks about lying a lot in this passage. If we say we follow Jesus, if we say we’re walking in the light, but we keep walking in the darkness of sin, we’re lying. Following Jesus means leaving the darkness behind and seeking Christ’s light in everything we do.
At the same time, we’re also lying if we say we’re not sinful. Even while we follow Jesus and try to do the right thing we keep falling short. That’s a fact of life; even though Jesus changes our life and makes us new, we won’t be perfect until Jesus returns. Hopefully, we learn from our mistakes and get better at following, but the more we learn from Jesus the more obvious it is that we are not all the way there yet. So we’re only fooling ourselves and even making Jesus look bad if we claim to be sin-free.
We’re lying if we claim to be innocent, and we’re lying if we claim to be disciples while continuing in our sin. Instead of either of these dishonest traps Jesus calls us to confess our sins and to trust him to cleanse us. As we put our trust in Jesus and honestly confess, Christ’s blood washes us clean.
It’s hard for us to understand blood making us clean. Many of us struggle with the whole idea of Christ’s cleansing blood. On the one hand we struggle with why Jesus had to die because it seems so unfair. And on the other hand we wonder how his blood can make us clean anyway. We think of blood as dirty, even dangerous.
For people of Jesus’ time animal sacrifice and the blood related to it was a natural part of religious ritual, like singing or prayer. That was the case for most religions in the Middle East and it was true for Israel’s faith as well.
When the temple was dedicated thousands of animals were sacrificed to make the temple holy to God. Blood was splashed against the altar to clean it and make it ready to offer sacrifice on. The Law of Moses goes into great detail about how many of what kind of animals would be sacrificed for different purposes at different times. The whole idea seems strange, maybe disgusting, to us now, but for our ancient ancestors in the faith sacrifice was a basic part of faith and life. The Letter to the Hebrews is the most detailed explanation of the ancient way of thinking about sin and how blood cleanses from sin.
When we studied Hebrews in seminary one of my teachers explained it like this: The Temple was a special place that connected heaven and earth. During the year sin built up on the temple because it was close to the people’s sin. We can picture that sin was like a sludge that built up on the temple. Each year the sin had to be cleaned off by rituals of confession and forgiveness including sacrifices of atonement with blood.
The author of Hebrews talks about how the sanctuary on earth was a copy of the true sanctuary in heaven. The sanctuary on earth had to be purified with animal sacrifices, but the perfect temple in heaven had to be purified with the perfect sacrifice of Jesus. The blood of animals could take away sin temporarily, but animal blood couldn’t deal with sin permanently; only the blood of Jesus could do that.