One of the reasons that confession of sin seems so odd, even distasteful, is that we have little to no sense of togetherness.
Sin creates space between persons, whether to opposite sides of the bed, the room, the city, or the country. Adam and Eve died when they disobeyed in the garden of Eden just as God warned them. Their immediate death was a spiritual death, and that death was a loss of fellowship. Not only was the relationship damaged between them, more importantly, their relationship with God was severed. Sin causes divorce.
The apostle John wrote that when we walk in the light as He is in the light we have fellowship with one another (1 John 1:7). That’s not all, indeed our fellowship is with the Father and with His Son (1:3). What blocks us from Trinitarian fellowship and joy? Sin. And we all sin, so we all stumble out of the light.
What can we do?
We can confess because we have an Advocate with the Father, Jesus Christ the righteous (2:1). He will forgive us and cleanse us (1:9). But that’s not all He does. He repairs the broken relationship. Sin separates but the Savior restores and unites.
Because we sin so much, because we splinter our relationships so often, you’d think that we’d be quicker to our knees and that we’d be MVPs at confessing. But we don’t. We don’t because we’re more cozy in the dark. We’re too often content at a distance from God and from one another.
Our Lord’s day worship is important because we have opportunity to clean the palate by confessing our sins. Worship is also important because it gives us a strong taste of fellowship with God as well as the intoxicating joy of harmony as an assembly. As we learn to love togetherness like the Trinity, our eternal lives won’t be the same.