“A concern for true biblical worship was at the very heart of the Reformation. But even Martin Luther, who wrote hymns and required his preachers to be trained in song, would not recognize this modern preoccupation with music as legitimate or healthy. Why? Because the Reformers were convinced that the heart of true biblical worship was the preaching of the word of God.
“Thanks be to God, evangelism does take place in Christian worship. Confronted by the presentation of the gospel and the preaching of the word, sinners are drawn to faith in Jesus Christ and the offer of salvation is presented to all. Likewise, the Lord’s Supper and baptism are honored as ordinances by the Lord’s own command, and each finds its place in true worship.
“Furthermore, music is one of God’s most precious gifts to his people, and it is a language by which we may worship God in spirit and in truth. The hymns of the faith convey rich confessional and theological content, and many modern choruses recover a sense of doxology formerly lost in many evangelical churches. But music is not the central act of Christian worship, and neither is evangelism nor even the ordinances. The heart of Christian worship is the authentic preaching of the word of God.”
(Al Mohler, “Expository Preaching—The Antidote to Anemic Worship” , AlbertMohler.com)