I can’t remember if I’ve asked this question before during an exhortation to confession. We’re now over 400 times of corporate confession on the Lord’s Day, and while there are a lot of things that require repentance, some of them need more repetition.
Who do you confess your sin for? Who benefits when you “say the same thing” (homologeo) as God? You are certainly one who profits. Sin separates us from fellowship, forgiveness granted restores fellowship, so if you want fellowship you need forgiveness which comes through confession.
You are not the only blessing-ficiary, though. God receives glory when we repent. It’s not that we should sin that grace may abound, though grace does reign over sin. God’s patience and mercy and atonement are exalted when we depend on Him. He doesn’t need us to confess in order to get honor for Himself, but He is honored by our honesty and our humility and our hope in Him.
That still isn’t the end of it. The scope of benefits and blessings should be broadened. When we confess our sins we are restored to fellowship, and God’s holy standard and perfect sacrifice are praised, and also the entire church body is built up.
Your sin may be private in that only you and God know about it, for now, but your sin is never isolated as if only you are affected by it. We are one body, we are God’s building. We might not be able to see the disintegration of some studs in the wall, but when you deal with rot the right way it strengthens the whole structure.