Regulative principle of worship

The regulative principle of worship is a Reformed Christian doctrine held by the Continental Reformed, Anabaptist, Presbyterian, Congregationalist and Baptist traditions that God commands churches to conduct public services of worship using certain distinct elements affirmatively found in the Bible, and conversely, that God prohibits any and all other practices in public worship. The doctrine further determines these affirmed elements to be those set forth in scripture by express commands or examples or, if not expressed, those implied logically by good and necessary consequence.

Source: Wikipedia — Regulative principle of worship (CC BY-SA 4.0)