Wren has carefully worked out the progression from "I" to "we." This text contains themes of remembrance (st. 1), of sharing the bread and wine in communion with the saints (st. 2-3) and with Christ in his presence (st. 4), and of Christian service (st. 5), but the prevailing tone is one of joy and praise.
Bert Polman, Psalter Hymnal Handbook
We celebrate with joy that Christ has come to rescue us from sin and evil through the work of his son, Jesus Christ. Our World Belongs to God, paragraph 35 identifies the church as “the fellowship of those who confess Jesus as Lord…the bride of Christ…”
Belgic Confession, Article 21 professes how Jesus Christ is a high priest forever and provided for the cleansing of our sins; Article 10 proclaims him as the “true eternal God, the Almighty, whom we invoke, worship and serve.” Heidelberg Catechism, Lord’s Day 1, Question and Answer 2 calls us to “live and die in the joy of this comfort” and “to thank God for such deliverance.”
Stanza 3 clearly imagines us at the Lord’s Table, a new community of love where divisions end and strangers become friends. Heidelberg Catechism, Lord’s Day 28, Questions and Answers 76 and 77 also reflects this greater health for the church by seeing us “united more and more to Christ’s blessed body” and “because there is one bread, we who are many are one body.”