“The claim that the church is primarily a community of worship could be easily misunderstood. Some people today, with pious intentions, assert that all of life should be worship to God. It is true, of course, that God calls us to glorify him in all that we do (1 Cor. 10:31), and he is pleased when we undertake any task righteously, but Scripture also speaks of a special activity that is more properly deemed “worship.” Such worship consists essentially in God’s speaking to us (through the reading and preaching of his Word and the administration of sacraments as his visible word) and his people speaking back to him (through prayer and song). Such worship is an activity of the redemptive kingdom alone. Believers share a variety of cultural activities with unbelievers in the common kingdom, but worship has never been one of them.”
 David VanDrunen, Living in God’s Two Kingdoms: A Biblical Vision for Christianity and Culture (Wheaton, IL: Crossway, 2010).