1676-1732. A Scottish Church Leader. One of the twelve Marrow Men.
I conclude this preface, in the words of two eminent professors of theology, deserving our serious regard:—
“I dread mightily that a rational sort of religion is coming in among us; I mean by it, a religion that consists in a bare attendance on outward duties and ordinances, without the power of godliness; and thence people shall fall into a way of serving God, which is mere deism, having no relation to Jesus Christ and the Spirit of God.”—Memoirs of Mr. Halyburton’s life, p. 199.
“I warn each one of you, and especially such as are to be directors of the conscience, that you exercise yourselves in study, reading, meditation and prayer, so as you may be able to instruct and comfort both your own and others consciences in the time of temptation, and to bring them back from the law to grace, from the active (or working) righteousness, to the passive (or received) righteousness; in a word, from Moses to Christ.” — Martin Luther’s comment in epist. ad Gal. p. 27.
~Thomas Boston~
The Whole Works of Thomas Boston: An Explication of the Assembly’s Shorter Catechism, ed. Samuel M‘Millan, vol. 7 (Aberdeen: George and Robert King, 1850), 149. From his preface to Edward Fisher’s The Marrow of Modern Divinity
The Old Guys 
Indeed ‘the Marrow of Modern Divinity’ was one of the first precursors to a more Neo-Calvinism! And this is closer to the historical theology of John Calvin in my opinion! Note today both the Neo-Calvinism of John Frame and Vern Poythress! Rock on! 🙂