David is ranked among the prophets, for he was a musician, and was also reputed to be (though perhaps very erroneously) the author of the Psalms.

But Abraham, Isaac, and Jacob are not called prophets; it does not appear from any accounts we have, that they could either sing, play music, or make poetry.
We are told of the greater and the lesser prophets.

They might as well tell us of the greater and the lesser God; for there cannot be degrees in prophesying consistently with its modern sense.

But there are degrees in poetry, and there-fore the phrase is reconcilable to the case, when we understand by it the greater and the lesser poets.
It is altogether unnecessary, after this, to offer any observations upon what those men, styled prophets, have written.

The axe goes at once to the root, by showing that the original meaning of the word has been mistaken, and consequently all the inferences that have been drawn from those books, the devotional respect that has been paid to them, and the laboured commentaries that have been written upon them, under that mistaken meaning, are not worth disputing about .-- In many things, however, the writings of the Jewish poets deserve a better fate than that of being bound up, as they now are, with the trash that accompanies them, under the abused name of the Word of God.
If we permit ourselves to conceive right ideas of things, we must necessarily affix the idea, not only of unchangeableness, but of the utter impossibility of any change taking place, by any means or accident whatever, in that which we would honour with the name of the Word of God; and therefore the Word of God cannot exist in any written or human language.
The continually progressive change to which the meaning of words is subject, the want of an universal language which renders translation necessary, the errors to which translations are again subject, the mistakes of copyists and printers, together with the possibility of wilful alteration, are of themselves evidences that human language, whether in speech or in print, cannot be the vehicle of the Word of God .-- The Word of God exists in something else.
Did the book called the Bible excel in purity of ideas and expression all the books now extant in the world, I would not take it for my rule of faith, as being the Word of God; because the possibility would nevertheless exist of my being imposed upon.