Rochester the Christian Hero
Upon my first visit to [Rochester], (May 26.) just at his return from his journey out of the West, he most gladly received me, shewed me extraordinary respects upon the score of mine office, thanked God, who had in mercy and good providence sent me to him, who so much needed my prayers and counsels; acknowledging how unworthily heretofore he had treated that order of men, reproaching them that they were proud, and prophesied only for rewards; but now he had learnt how to value them; that he esteemed them the servants of the most High God, who were to shew him the way to everlasting life... I never (said he) was advanced thus far towards happiness in y life before, though upon the commissions of some sins extraordinary I have had some checks and warnings considerable from within, but still struggled with 'em, and so wore them off again... I was not ever well reconciled to the business of Christianity, nor had that reverence for the Gospel of Christ as I ought to have. Which estate of mind continued, till the 53rd Chapter of Isaiah was read to him... and some other portions of Scripture; by the power and efficacy of which word, assisted by his holy Spirit, God so wrought upon his heart, that he declared that the mysteries of Passion appeared so clear and plain to him, as ever anything did that was represented in a glass.

Robert Parsons, A Sermon preached at the Funeral of the Rt Honorable John Earl of Rochester, 1680 

[Rochester] said he was now persuaded both of the truth of Christianity and of the power of inward Grace, of which he gave me this strange account. He said Mr Parsons, in order to his conviction, read to him the 53 Chapter of the Prophecy of Isaiah... He said to me that as he heard it read he felt an inward force upon him, which did so enlighten his mind and convince him that he could resist it no longer: For the words had an authority which did shoot like rays or beams in his mind, so that he was not only convinced by the reasonings he had about it, which satisfied his understanding, but by a power which did so effectually constrain him that he did ever after as firmly believe in his Saviour as if he had seen him in the clouds.

Gilbert Burnet, Some Passages of the Life and Death of the Right Honourable John Earl of Rochester, 1680