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

Colossians 3:16 (NASB) Let the word of Christ richly dwell within you, with all wisdom teaching and admonishing one another with psalms and hymns and spiritual songs, singing with thankfulness in your hearts to God.

1 Corinthians 14:15 (NASB) What is the outcome then? I shall pray with the spirit and I shall pray with the mind also; I shall sing with the spirit and I shall sing with the mind also.