I'd like to know what is the Catholic theology behind offering Jesus's suffering to the Father.
I'm trying to understand this prayer (from St. Bridget's 12-Year Prayer) more deeply:
Eternal Father, through Mary’s unblemished hands and the Divine Heart of Jesus, I offer to Thee the terrifying suffering of the Heart of Jesus on the Mount of Olives, and every drop of His Sweat of Blood, as atonement for my and all of humanity’s sins of the heart, as protection against such sins, and for the spreading of Divine and Brotherly Love.
I don't fully understand how can one offer somebody's else suffering to gain grace for oneself.
I have a theory but I'm not sure if it's correct. My theory or understanding is that none of us is capable of such a sacrifice which brings reconciliation with God. So offering it up to the Father it reminds him of this reconciliation. And here I think is the problem with my understanding. I don't think God the Father needs to be reminded of his suffering. That's why I'm asking what is the teaching...