Sin also carries on its war by entangling the affections and drawing them into an alliance against the mind. Grace may be enthroned in the mind, but if sin controls the affections, it has seized a fort from which it will continually assault the soul. Hence, as we shall see, mortification is chiefly directed to take place upon the affections.
John OwenThe indulgence of one sin opens the door to further sins. The indulgence of one sin diverts the soul from the use of those means by which all other sins should be resisted.
John OwenIf our principal treasure be as we profess, in things spiritual and heavenly, and woe unto us if it be not so! on them will our affections, and consequently our desires and thoughts, be principally fixed.
John Owen