I begin with Revelation 22:9 not because I want to do an exposition of it today, but because I want us to hear the simple command, “Worship God!” The angel said to John, when he fell down at the angel’s feet, “Do not do that. I am a fellow servant of yours and of your brethren the prophets and of those who heed the words of this book. Worship God.” In others words, don’t worship angels, worship God! Don’t worship nothing, worship God! Don’t neglect God or despise God, worship God! This is the last chapter of the Bible, and this is the last duty of man: worship God!
—John Piper, “Worship God” (sermon)