From page xi of the Altar Book for Lutheran Service Book:
"The custom of processing to read the Holy Gospel in the midst of the congregation is commended for church festivals."
At St. Paul's, we recognize every Sunday celebration as a Church festival! We process the Holy Gospel into the midst of the congregation each weekend. Why? What does this bringing of the Gospel into our midst manifest? It shows us that Christ Himself is in the midst of our gathered assembly, continuing to speak the Word by which alone we live in Him. "Where two or three are gathered in my name, there am I in the midst of them." As in His incarnation He came among us to give us life, so in His enscriptured Word He still speaks to give us life. As we turn all toward the Gospel book in our midst and hear our Lord speak to us, we rejoice in how He keeps His promise to abide with us until the end of the age.