It is often little known how common (universal almost) that the doctrine of the Sincere Free Offer of the Gospel has been in reformed history.  So here is it is documented in another major reformed figure, of whom the world was not worthy.  Brown was an early 1700’s Scotsman who learned Greek on his own as a shepherd in the fields while he was young man, became a theological professor in the Secession Church, and is most well known today for his Systematic Theology (or, Natural and Revealed Religion, as it was originally published).

John Brown of Haddington on the Sincere Free Offer of the Gospel