Worship of the Holy One of Israel must be regulated by His word
Worship that is regulated by His word is acceptable, worship not regulated by His word is deadly

Ex: Uzzah (1 Chronicles 13:1-14, 15:1-16,25-29)
Though there was no command not to do the specific thing they did, they were not to adopt the procedures of the world, but were to worship according to the command of the Lord (1 Samuel 6:1-8, Exodus 25:10-15)

*Just like Uzzah died for David’s sinful worship, Jesus Christ died for our sinful worship, and must become the center of our worship, if we are to worship God acceptably