Here was my initial response. From a Lutheran perspective, theology and worship are intimately connected. Thus, justification by grace through faith is not only the pillar by which the church stands or falls, it is the heart of worship (or strictly “divine service” – meaning God serves us through Word and Sacrament, and we respond in service with praise, prayer, and singing).
This also means that our theology and worship are Christocentric, while also being Trinitarian. The invocation (”in the name of the Father and of the Son and of the Holy Spirit”) is Trinitarian and Baptismal. Note that Lutheran worship traditionally begins with those words, and not the common Protestant one (”We make our beginning in the name of the Father and of the Son and of the Holy Spirit), because we see worship as not only God centered, but God-initiated. The God who baptized us is the God who calls us into to his presence to receive his gifts in the Word and in the Lord’s Supper. The invocation is matched by the Trinitarian benediction (Numbers 6:24-26). This is not a conclusion but a sending with the promise that all that God has bestowed in the service now goes with the person. This matches the use of Numbers 6 as the blessing before the Israelites begin their extended journey.
Of course, there is much more to this, which I hope to address in the near future.