Only those elements that are instituted or appointed by command or example or which can be deduced by good and necessary consequence from Scripture are permissible expressions Church, and that whatever is not commanded or cannot be deduced by good and necessary consequence from Scripture is prohibited.
The regulative principle is often contrasted with the “Normative Principle,” which teaches that whatever is not prohibited in Scripture is a permissible expression of church, as long as it is agreeable to the peace and unity of it.
I know, I had to read through those several times myself. Confession, I didn’t come up with these. They are nuanced versions of the “Regulative Principle of Worship” & “Normative Principle of Worship,” which are described here.
In your opinion, which of these nuanced principles are better? Why?