As to the object of your affections, in an especial manner, let it be the cross of Christ, which has exceeding efficacy towards the disappointment of the whole work of indwelling sin: “God forbid that I should glory, save in the cross of our Lord Jesus Christ, whereby the world is crucified unto me, and I unto the world” (Galatians 6:14). The cross of Christ he [Paul] glorified and rejoiced in’ this his heart was set upon; and these were the effects of it – it crucified the world unto him, made it a dead and undesirable thing. The baits and pleasures of sin are taken all of them out of the world…If the heart be filled with the cross of Christ, it casts death and undesirableness upon them all; it leaves no seeming beauty, no appearing pleasure or comeliness, in them. Again, says he, “It crucifies me to the world; makes my heart, my affections, my desires, dead unto any of these things.” It roots up corrupt lusts and affections, leaves no principle to go forth and make provision for the flesh to fulfill the lusts thereof. Labor, therefore, to fill your hearts with the cross of Christ…that there may be no room for sin.
– Jonathan Edwards
as quoted byPiper, John; When I Don’t Desire God: How to Fight for Joy; Crossway; Wheaton, Ill.; copyright 2004; p. 106