Sing unto him a new song; play skilfully with a loud noise.
Ver. 3. Sing unto him a new song] sc. Upon every new emergent occasion. God reneweth his mercies not only every morning, but every moment: so should we our praises; every breath we draw should praise the Lord, Psalms 150:6. Doth God give comforts? praise him, and they shall be continued. Doth he send crosses? praise him, and they shall be removed, saith a Father; but "in everything give thanks"; and that not coldly and cursorily, but ardently, and with utmost affection; for which cause this duty is so reiterated here, and pressed with such forcible arguments in the following verses, as might work upon the very stones almost; much more men, for whose sakes all this fair fabric of the world was erected.
Play skilfully (or lustily) with a loud noise] Make good music, set all your skill and might at work to magnify the Lord. It is not an easy matter to praise God aright; it must be done Corde, ore, opere, with the very best of the best. Benefacite canendo, cum iubilatione.