I will sing a new song unto thee, O God. Another change of strain. The psalmist returns to his original theme of the praise of God (see Psalms 144:1, Psalms 144:2), and promises a "new song," as in Psalms 40:3.
Upon a psaltery and an instrument of ten strings will I sing praises unto thee; rather, upon a psaltery of ten strings (see the Revised Version, and comp. Psalms 33:2). Assyrian harps had commonly, in the earlier ages, either eight, nine, or ten strings.