Worship is not for the purpose of remembering the Reformation, hailing the founding of America, saluting mothers, boy scouts, girl scouts, or grandparents. Worship does not celebrate Independence Day, Memorial Day, or Labor Day. No. Worship remembers the birth, life, death, and resurrection of Jesus Christ… . All that goes into an actual service of worship must pertain to the event of God revealing Himself to us, becoming incarnate in our history, and redeeming us from the power of the evil one, setting us free to enjoy Him forever.

— Robert Webber, Worship Is a Verb: Celebrating God’s Mighty Deeds of Salvation 

Whenever Scripture talks about praising God publicly, it’s talking about something extremely dangerous. This is because announcing his praise is nothing other than opposing the devil, the world, our own sinful nature, and everything evil. For how can you praise God without first declaring that the world is guilty and condemned? All who condemn the world are asking to be hated and put themselves in a very dangerous situation.

— Martin Luther (LW 12:393)