From Alexander Blaikie’s Catechism of Praise:
“XXI. What, then, is the duty of Christian churches in this matter? In whatever manner governed, they ought, as Protestants, carefully to avoid all unauthorized worship, either in the matter or manner or praise; to abide by that which is commanded, recollecting that all the embellishments and meretricious ornaments, with which human skill invests the matter and manner or our praise, are similar to the armour or Saul when placed on David. 1 Sam. 17:39. They form no appointed part of the “armour of God” in the Christian “warfare,” Eph. 6:11, and they must be cast aside, or we will incur the displeasure of “a jealous God;” spread, under his disapprobation, spiritual death over the churches of Christ; cause his children to weep in secret places; the men of this world to rejoice, and the enemies of Christ to blaspheme.
XXII. What, then, should we sing to the praise of God? Our own edification and safety lie in singing only the Book of Psalms; not any “imitation,” but “the word of Christ” itself, in the most literal and correct version which can be obtained. Notwithstanding numerous minor defects, the Scotch or Presbyterian “version is, upon the whole, the best.” When using it, “we have the satisfaction to know, that we utter praise in the very words of inspiration;” and in the opinion of Boswell, “it is vain to think of having a better.” Of the version of Sternhold and Hopkins, the Rev. Wm. Romaine says, “It is generally the sentiment of the Holy Spirit. That is very rarely lost, and this should silence every objection—it is the word of God. Moreover, the version comes nearer to the original than any I have ever seen except the Scotch.” Some judicious verbal amendments, by the omission of antiquated words, would be truly desirable if Presbyterians could unanimously make them.
XXIII. In what manner, then, should we sing these sacred songs to the praise of Jehovah? Always as an act of divine worship, with the spirit and with the understanding, with our voice, and with grace in our hearts, making melody to the Lord—individually—in families—and in the house of God. Avoiding the decorations of a theatrical and sentimental taste, and delighting ourselves in the word of Christ after the inward man, we will grow in grace and in the knowledge of our Lord and Saviour Jesus Christ; we will come to an innumerable company of angels, to the spirits of just men made perfect, and daily join with them in singing the song of Moses and of the Lamb.”