153 Pope Pius XI wished to ground this particular devotion in the realization that the mystery of our redemption by Christ’s passion transcends, by God’s grace, all boundaries of time and space. On the cross, Jesus offered himself for all sins, including those yet to be committed, including our own sins. In the same way, the acts we now offer for his consolation, also transcending time, touch his wounded heart. “If, because of our sins too, as yet in the future but already foreseen, the soul of Jesus became sorrowful unto death, it cannot be doubted that at the same time he derived some solace from our reparation, likewise foreseen, at the moment when ‘there appeared to him an angel from heaven’ ( Lk 22:43), in order that his heart, oppressed with weariness and anguish, might find consolation. And so even now, in a wondrous yet true manner, we can and ought to console that Most Sacred Heart, which is continually wounded by the sins of thankless men”.
Source: Dilexit Nos (Vatican.va)