Albert Barnes' Notes on the Whole Bible - Psalms 33:3
Sing unto him a new song - A song specially composed for this occasion; expressive of the special feelings suggested by this occasion, or appropriate to this new manifestation of the divine goodness and mercy. Such occasions, exhibiting some new phase of the divine goodness, demanded new language appropriate to them. So now, new hymns of praise, and new tunes in music, are demanded to meet the ever-varying manifestations of the mercy of God; and as the church is extended in the world, its modes... read more
The Pulpit Commentary - Psalms 33:3
Sing unto him a new song (comp. Psalms 40:3 ; Psalms 96:1 ; Psalms 98:1 ; Isaiah 42:10 ; Revelation 5:9 ; Revelation 14:3 ). Not necessarily a song unheard before, but one fresh from the singer's heart. Play skilfully with a loud noise. The loudness of a thanksgiving song was regarded as an indication of its heartiness (comp. Psalms 98:4 ; Psalms 100:1 ; Psalms 150:5 ; and see also 2 Chronicles 20:19 ; 2 Chronicles 30:21 ; Ezra 3:11-13 ; Nehemiah 12:42 ). read more