As I read through the comments this week, I couldn’t help but think about a missiological principle, that of form vs. function. It has to do with what is done and why it is done.
We know that. We do. We feel comfortable substituting the holy kiss with the warm handshake. We look at John 13 and say that Jesus was teaching about service, not creating a new act of worship through washing feet. Many people feel that “raising holy hands” can be accomplished with the heart. [Sometimes we misuse the word "cultural" by saying "That's just cultural."]
There are other areas where we feel that the form and function are inseparable. Most feel that pizza and Sprite aren’t suitable replacements for the elements of the Lord’s Supper. Most members of the churches of Christ feel that water is an intrinsic part of baptism, to such a degree that the term “water baptism” sounds foreign to our ears.
How do we decide? How do we know when fulfilling the function is enough and when to insist on the exact form?


A few years ago, for a sermon, I came up with a list of hymns for the egotist. Here are some of the ones I thought of:
