Why do we have communion every week?
The majority of us do not come from churches where communion was every Lord’s Day, and the majority of us came from churches where you probably wouldn’t want to partake in communion on an hebdomadal schedule. The Lord’s Table was set once a month, or once a quarter, and it usually involved a serious talking-to, about the dangers of unworthy eating and drinking, and how you probably could take it, but only after major effort to jackhammer your heart and take a backhoe to your sin.
Of course, and yes, it is possible to partake unworthily, so said God through Paul in 1 Corinthians 11:27. But the Corinthians were in danger of selfish feasting as fellow brothers went hungry. Their “communion” was a lie.
But the selfish party attitude is not the only way to lie about communion. It is also a lie to act like joy is sin.
Jesus did not institute this Supper on the night He was betrayed, so that we could remember Him and what He did, and then go digging the depths for sake of bringing up as sad feels as we can find. He died for us and rose on the third day so that we would have a reason not to be so sad.
He gave His body for our food, and His blood for our drink, so that we might be nourished. This is not a fast. This is not where Jesus asks you to starve your soul. This is a place where He feeds your faith, as He fed the Israelites in the wilderness (John 6:31-33). It is a supernatural meal, a thanksgiving meal, a meal of peace.
Rejoicing is as much a necessary condition for communion as repentance. Rejoice in the Lord, always, and again I say, rejoice!