Worship is more than words, but it’s not less than words.
Encounters with God are sometimes difficult to define. But wordless worship is not somehow better than worship with words. Worship without words can never communicate objective truth and God is the defining, objective reality in which we live and move. Experiences, whether audibly through music or visually through art, are in large part subjective. The ultimate goal of our worship is not to reach a state of feeling without thinking. And Revelation indicates we’ll be using words (without sin!) in the new heavens and earth.

Words enable us to worship God together.
Words enable us to think and say the same things together, rooting our unity in the gospel and not simply in a shared experience. A hundred people listening to a song being played can have a hundred different thoughts about what is happening. As my friend Jon Payne has said, “A picture is worth 1000 words. The problem is, the viewer gets to decide what those words are.” There will be some variation when we hear/proclaim words together, but there’s greater potential for unity in our understanding and expression. It’s one of the reasons God has us sing together and not simply hum or whistle.

Words complete the act of worship.
I can’t make this point better than C.S. Lewis, who wrote in Reflections on the Psalms, “But the most obvious fact about praise — whether of God or anything — strangely escaped me. I thought of it in terms of compliment, approval, or the giving of honor. I had never noticed that all enjoyment spontaneously overflows into praise…I think we delight to praise what we enjoy because the praise not merely expresses but completes the enjoyment; it is its appointed consummation.” My love for my wife leads me to say something. Again and again and again. I want her and others to know my feelings. So it is in our relationship with God. Worship works its way out into words.

So by all means, let us thank God for music and treasure those times we’re dumbstruck as we consider the unparalleled greatness, holiness, beauty, and mercy of God in Jesus Christ. But let’s also remember that God redeemed us to “proclaim the excellencies of him who called you out of darkness into his marvelous light” (1 Pet. 2:9).