In the dedication to his book on the covenant of grace, John Colquhoun acknowledged his indebtedness to the following sources: It is, however, proper to acknowledge that the Authors, to whom much of the doctrinal part of this Treatise, is indebted for its materials, are, Cloppenburg, Witsius, Turretine, Moor, Erskine, Brown, Hervey, Gib, Muirhead, Gill, and Boston. As to the last judicious Writer, I freely acknowledge, that, so far as he has proceeded, I have followed him so closely, as often to adopt, for the most part his method, and even his illustrations and proofs. Indeed, the substance of the greater part of his Book on the Covenant of Grace, is extracted, and will be found in the following pages; though the sentiments are expressed in a different manner. John Colquhoun, A Treatise of the Covenant of Grace (Edinburgh: Ogle, Allardice and Thomson, 1818), v. Who are Cloppenburg, Hervey, and Muirhead? It strikes me as interesting that he admits to relying on the Particular Baptist theologian, John Gill, which perhaps indicates that there is more continuity between the Reformed and Particular Baptists on the covenant of grace than is sometimes thought. Given Colquhoun's reliance on Thomas Boston, it is probable that he held the view that only the elect are, properly speaking, in the covenant. N.B. Moor is probably a reference to Bernardinus de Moor.