The regulative principle of worship (include in worship only what Scripture endorses, which was Calvin’s view) and the normative principle (include whatever is not prohibited in Scripture, which was Luther’s view who wanted to retain much of Roman Catholicism's rituals). Most churches use both principles to varying degrees. We must be regulative regarding the pattern seen in Acts 2:42-47. But normative with parts of our worship not directly addressed in Scripture such as announcements, length and order of service, sound equipment, technology, padded pews, and please don’t forget the nursery.

Does the regulative principle determine the use of musical instruments in a worship service or the style of music?