When we worship God we do so according to that which he has laid down in his Word. We sing his word, read his Word, pray his Word, preach his Word, and we celebrate that Word in visible form in baptism and the Lord's Supper. No more, no less. Worship according to the book. Worship according to that which is written down.1
Derek W. H. Thomas
2 Then arose Jeshua the son of Jozadak, with his fellow priests, and Zerubbabel the son of Shealtiel with his kinsmen, and they built the altar of the God of Israel, to offer burnt offerings on it, as it is written in the Law of Moses the man of God.