Charles H. Spurgeon on Psalms 71:22

I will also praise thee with the psaltery. Love so amazing calls for sweetest praise. David would give his best music, both vocal and instrumental, to the Best of Masters. His harp should not be silent, nor his voice. Even thy truth, O my God. This is ever a most enchanting attribute —viz., the truth or faithfulness of our covenant God. On this we rest, and from it we draw streams of richest consolation. His promises are sure, his love unalterable, his veracity indisputable. What saint will not praise him as he remembers this? Unto thee will I sing with the harp, O thou Holy One of Israel. Here is a new name, and, as it were, a new song. The Holy One of Israel is at once a lofty and an endearing name, full of teaching. Let us resolve, by all means within our power, to honour him. Here is the final vow of praise.