The instrumentality by which the spiritual reformers of the eighteenth century carried on their operations was of the simplest description. It was neither more nor less than the old apostolic weapon of preaching.
The sword which St Paul wielded with such mighty effect, when he assaulted the strongholds of heathenism eighteen centuries earlier, was the same sword by which they won their victories.
They preached simply. They rightly concluded that the very first thing to be aimed at in a sermon was to be understood. They strove to come down to the level of the people, and to speak what the poor could understand. To attain this they were not ashamed to crucify their style, and to sacrifice their reputations for learning. They carried out the maxim of Augustine, - 'A wooden key is not so beautiful as a golden one, but if it can open the door when the golden one cannot, it is far more useful.'
They preached fervently and directly. The cast aside that dull, cold, heavy, lifeless mode of delivery, which had long made sermons a very proverb for dullness. They proclaimed the words of faith with faith, and the story of life with life. They spoke with fiery zeal, like men who were thoroughly persuaded that what they said was true, and that it was of the utmost importance to your eternal interest to hear it. They threw heart and soul and feeling into their sermons, and sent their hearers home convinced, at any rate, that the preacher was sincere and wished them well. They believed that you must speak from the heart if you wish to speak to the heart, and that there must be unmistakable faith and conviction within the pulpit if there is to be faith and conviction among the pews.
For one thing, then, the spiritual reformers of the eighteenth century taught constantly the sufficiency and supremacy of the Holy Scripture. The Bible, whole and unmutilated, was their sole rule of faith and practice. They accepted all its statements without being uninspired. They never flinched from asserting that there can be no error in the Word of God; and that when we cannot understand or reconcile some part of its contents, the fault is in the interpreter and not in the text. In all their preaching they were eminently men of one book. To that book they were content to pin their faith, and by it to stand or fall.
Furthermore, the reformers of the eighteenth century taught constantly
Furthermore, the reformers of the eighteenth century taught constantly that Christ's death upon the cross was the only satisfaction for man's sins; and that, when Christ died, He died as our substitute – 'The just for the unjust.' This, in fact, was the cardinal point in almost all their sermons. They loved Christ's person; they rejoiced in Christ's promises; they urged men to walk after Christ's example. But the one subject, above all others, concerning Christ, which they delighted to dwell on, was the atoning blood which Christ shed for us on the cross.
Furthermore, the reformers of the eighteenth century taught constantly the great doctrine of justification by faith. They told men that faith was the one thing needful in order to obtain an interest in Christ's work for their souls. ... Justification by virtue of church membership – justification without believing or trusting – were notions to which they gave no countenance. Everything, if you will believe, and the moment your believe; nothing, if you do not believe – was the very marrow of their preaching.
Furthermore, the reformers of the eighteenth century taught constantly the universal necessity of heart conversion and a new creation by the Holy Spirit. They proclaimed everywhere to the crowds they addressed, 'Ye must be born again.' Sonship to God by baptism – sonship to God while we do the will of the devil – such sonship they never admitted.
Furthermore, the reformers of the eighteenth century taught constantly the inseparable connection between true faith and personal holiness. A true Christian, they maintained, must always be known by his fruits. 'No fruits, no grace,' was the unvarying tenor of their preaching.
Finally, the reformers of the eighteenth century taught constantly, as doctrines both equally true, God's eternal hatred against sin, and God's love towards sinners. Both about heaven and about hell they used the utmost plainness of speech. They never shrunk from declaring, in plainest terms, the certainty of God's judgment and of wrath to come, if men persisted in impenitence and unbelief; and yet, they never ceased to magnify the riches of God's kindness and compassion, and to entreat all sinners to repent and turn to God before it was too late.
Such were the main truths which the English evangelists of those times were constantly preaching.