2.

As regards those which have no inscription, we must also inquire to whom we ought to ascribe them. For why is it that even the simplest inscription is wanting in them--such as the one which runs thus, "A psalm of David," or "Of David," without any addition? Now, my idea is, that wherever this inscription occurs alone, what is written is neither a psalm nor a song, but some sort of utterance under guidance of the Holy Spirit, recorded for the behoof of him who is able to understand it. But the opinion of a certain Hebrew on these last matters has reached me, who held that, when there were many without any inscription, but preceded by one with the inscription "Of David," all these should be reckoned also to be by David. And if this be the case, it follows that those without any inscription are by those (writers) who are rightly reckoned, according to the titles, to be the authors of the psalms preceding these. This book of Psalms before us has also been called by the prophet the "Psalter," because, as they say, the psaltery alone among musical instruments gives back the sound from above when the brass is struck, and not from beneath, after the manner of others. In order, therefore, that those who understand it may be zealous to carry out the analogy of such an appellation, and may also look above, from which direction its melody comes--for this reason he has styled it the Psalter. For it is entirely the voice and utterance of the most Holy Spirit.