All true worship must be regulated by Scripture . This means that we worship according to the Bible:
“the acceptable way of worshipping the true God is instituted by Himself, and so limited by his own revealed will, that he may not be worshipped according to the imaginations and devices of men, or the suggestions of Satan, under any visible representation, or any other way not prescribed in the holy Scripture.”
Westminster Confession of Faith 21.1
God, not us, decides and reveals what is pleasing to Him. He calls us to worship and to worship on His terms. The Bible gives a gripping example of this principle:
“Now Nadab and Abihu, the sons of Aaron, each took his censer and put fire in it and laid incense on it and offered unauthorized fire before the LORD, which he had not commanded them. And fire came out from before the LORD and consumed them, and they died before the LORD. Then Moses said to Aaron, ‘This is what the LORD has said: “Among those who are near me I will be sanctified, and before all the people I will be glorified.”’ And Aaron held his peace.”
Leviticus 10:1-3
We do believe that “…there are some circumstances concerning the worship of God…common to human actions and societies, which are to be ordered by the light of nature, and Christian prudence, according to the general rules of the Word, which are always to be observed.” (WCF 1.6)
In other words, God tells us what to do in worship, but some of the details of how we do them is left to the general rules He gave us like “Let all things be done unto edifying” and “Let all things be done decently and in order” (1 Cor. 14:26, 40).
“Only when the elements of worship are those appointed in God’s Word, and the circumstances and forms of worship are consonant with God’s Word, is there true freedom to know God as he is and to worship him as he desires to be worshiped.” (OPC Directory of Worship)