We need partners, family, and friends. Without them we cannot live as God intended for us to live. To say anything about the community within God means that we must also talk about the way God wants us to live together. God did not reveal Godself to us simply for us to have intriguing discussions about the mysterious but never let it affect us. Trinity Sunday comes when it does in the Christian calendar for this reason.
Today marks the beginning of the second half of the year.
In the first half of the year, we focused on Jesus career on earth from his birth to his resurrection. Now as the second half of the year begins, Trinity Sunday marks the time when we respond to all the Jesus Christ lived and taught us while on earth. Celebrating Trinity Sunday means celebrating how we as a community of faith model our lives after the community of God, how we are the community of God on earth. It means that we are a community defined not by what can be explained, what can be hoarded, or what others can do for us. Instead, we are the transformed community of the living God who has created us, redeemed us, and sustained us.