In the past three-plus decades, a significant conversation has taken place among American Protestants about worship. As a result, countless books have been written on the subject. We have read books on music and worship, ancient-future worship, worship as spiritual formation, worship and the arts, worship and children, even life as worship. Listen to that conversation, however, and you will notice one word conspicuously absent. While the heart and soul of the Christian life is love, and while the apostle Paul (I Corinthians 13) insists that worship without love fails to be worship, recent...