Paul’s view of music is not simply benign. Rather, he sees music as having a role to play in sanctification. One scholar of church music observes that the NT has relatively little to say about music, aside from “a stray remark in two of the Epistles about the singing of hymns and spiritual songs” (Eric Routley, Church Music and the Christian Faith, 15). Routley is referring to this passage in Ephesians and the parallel passage in Colossians. But this is certainly not a stray remark.
—Stephen R. Guthrie, “Singing, in the Body and in the Spirit,” Journal of the Evangelical Theological Society 46/4 (December 2003), 638‐39