Owen in Of the Mortification of Sin in Believers

Strength and comfort, and power and peace, in our walking with God, are the things of our desires. Were any of us asked seriously what it is that troubles us, we must refer it to one of these heads (63).

In the ordinary walking with God, and in an ordinary course of his dealing with us, the vigor and comfort of our spiritual lives depend much on our mortification . . . (64)

As sin weakens, so it darkens the soul. It is a cloud, a thick cloud, that spreads itself over the face of the soul, and intercepts all the beams of God’s love and favor. It takes away all sense of the privilege of our adoption; and if the soul begins to gather up thoughts of consolation, sin quickly scatters them . . . (65)

The heart is like the sluggard’s field – so overgrown with weeds that you can scarce see the good corn. Such a man may search for faith, love, and zeal, and scarce be able to find any; and if he does discover that these graces are there yet alive and sincere, yet they are so weak, so clogged with lusts, that they are of very little use; they remain, indeed, but are ready to die. But now let the heart be cleansed by mortification, the weeds of lust constantly and daily rooted up (as they spring daily, nature being their proper soil), let room be made for grace to thrive and flourish – how will every grace act its part, and be ready for every use and purpose! (66).