from signposts:

When we take the Lord’s Supper, we aren’t just agreeing to a theological principle or performing a dutiful act of remembrance like laying flowers on a grave. The Lord’s Supper is a many-layered subversive and prophetic act that declares once and for all – the exile of God’s people is over. The kingdom of God has come and will culminate in a final feast where all the friends of Jesus, regardless of class, race, gender, or nationality will sit at his table. Israel is – not a proud, pure, triumphant nation – but a rag-tag band of sinners living in the grace of God. That’s who we are and that’s why we bother with the Lord’s Supper….