Isaiah

“To load it daily with all the things which shall after be mentioned, that are grievous, killing, and destructive to it, is the height of this contest. Such a one never thinks his lust dead because it is quiet, but labours still to give it new wounds, new blows every day. So the apostle, Col. iii. 5.”
― John Owen, Of the Mortification of Sin in Believers

“When, therefore, men have slight and transient thoughts of their lusts, it is no great sign that they are mortified, or that they are in a way for their mortification. This is every man’s “knowing the plague of his own heart,” 1 Kings viii. 38, without which no other work can be done. It is to be feared that very many have little knowledge of the main enemy that they carry about with them in their bosoms”
― John Owen, Of the Mortification of Sin in Believers

“5. The promise unto this duty is life: “Ye shall live.” The life promised is opposed to the death threatened in the clause foregoing, 9“If ye live after the flesh, ye shall die;” which the same apostle expresseth, “Ye shall of the flesh reap corruption,” Gal. vi. 8, or destruction from God. Now, perhaps the word may not only intend eternal life, but also the spiritual life in Christ, which here we have; not as to the essence and being of it, which is already enjoyed by believers, but as to the joy, comfort, and vigour of it: as the apostle says in another case, “Now I live, if ye stand fast,” 1 Thess. iii. 8; — “Now my life will do me good; I shall have joy and comfort with my life;” — “Ye shall live, lead a good, vigorous, comfortable, spiritual life whilst you are here, and obtain eternal life hereafter.”
― John Owen, Of the Mortification of Sin in Believers

“Alas!’ he said, ‘that these evil days should be mine, and should come in my old age instead of that peace which I have earned. Alas for Boromir the brave! The young perish and the old linger, withering.”
― J.R.R. Tolkien, The Two Towers