John Gills Exposition of the Bible Commentary - Psalms 98:5
Sing unto the Lord with the harp ,.... Playing upon that at the same time: here and in the following verse is an allusion to Old Testament worship, and the manner of performing that; not that this should be done in New Testament times, only New Testament worship is expressed in Old Testament language, which is no unusual thing; hence in Gospel times, and Gospel churches, the saints, especially when singing the new song of redeeming grace, are said to have harps in their hands, expressive... read more
Matthew Henry's Complete Commentary - Psalms 98:4-9
The setting up of the kingdom of Christ is here represented as a matter of joy and praise. I. Let all the children of men rejoice in it, for they all have, or may have, benefit by it. Again and again we are here called upon by all ways and means possible to express our joy in it and give God praise for it: Make a joyful noise, as before, Ps. 95:1, 2. Make a loud noise, as those that are affected with those glad tidings and are desirous to affect others with them. Rejoice and sing praise, sing... read more