All through Rutherford's lifetime preaching was his chiefest enjoyment and his most exquisite delight. He was a born preacher, and his enjoyment of preaching was correspondingly great. Even when he was removed from Anwoth to St. Andrews, where, what with his professorship and principalship together, one would have thought that he had his hands full enough, he yet stipulated with the Assembly that he should be allowed to preach regularly every Sabbath-day. But sin, again, that dreadful, and, to Rutherford, omnipresent evil, poisoned all his preaching also and made it one of the heaviest burdens of his conscience and his heart and his life. There is a proverb to the effect that when the best things become corrupt then that is corruption indeed. And so Rutherford discovered it to be in the matter of his preaching. Do what he would, Rutherford, like Shepard, could not keep the thought of what men would think out of his weak and evil mind, both before, and during, but more especially after his preaching. And that poisoned and corrupted and filled the pulpit with death to Rutherford, in a way and to a degree that nobody but a self-seeking preacher will believe or understand. Rutherford often wondered that he had not been eaten up of worms in his pulpit like King Herod on his throne, and that for the very same atheistical and blasphemous reason.
Those in this house who have followed all this with that intense and intelligent sympathy that a somewhat similar experience alone will give, will not be stumbled to read what Rutherford says in his letter to his near neighbour, William Glendinning: 'I see nothing in this life but sin, sin and the sour fruits of sin. O what a miserable bondage it is to be at the nod and beck of Sin!' Nor will they wonder to read in his letter to Lady Boyd, that she is to be sorry all her days on account of her inborn and abiding corruptions. Nor, again, that he himself was sick at his heart, and at the very yolk of his heart, at sin, dead-sick with hatred and disgust at sin, and correspondingly sick with love and longing after Jesus Christ. Nor, again, that he awoke ill every morning to discover that he had not yet awakened in his Saviour's sinless likeness. Nor will you wonder, again, at the seraphic flights of love and worship that Samuel Rutherford, who was so poisoned with sin, takes at the name and the thought of his divine Physician. For to Rutherford that divine Physician has promised to come 'the second time without sin unto salvation.' The first time He came He sucked the poison of sin out of the souls of sinners with His own lips, and out of all the enjoyments that He had sanctified and prepared for them in heaven. And He is coming back--He has now for a long time come back and taken Rutherford home to that sanctification that seemed to go further and further away from Rutherford the longer he lived in this sin-poisoned world. And, amongst all those who are now home in heaven, I cannot think there can be many who are enjoying heaven with a deeper joy than Samuel Rutherford's sheer, solid, uninterrupted, unadulterated, and unmitigated joy.