Charles Spurgeon Commentary Ephesians 5:19

"speaking one to another in psalms and hymns and spiritual songs, singing and making melody with your heart to the Lord;" — Ephesians 5:19 (ASV)

We would have thought that Paul would have said, "singing and making melody with your voice to the Lord." But the apostle, guided by the Holy Spirit, overlooks the sound, which is the mere body of the praise, and looks to the heart, which is the living soul of the praise: Making melody in your heart to the Lord.

For the Lord cares not merely for sounds, even if they are the sweetest that ever came from the lip of man or angel; he looks at the heart. God is a Spirit, and he looks spiritually at our spiritual praises.

Therefore, let us make melody in our heart to the Lord.