74 The fourth end, finally, is that of impetration. Man, being the prodigal son, has made bad use of and dissipated the goods which he received from his heavenly Father. Accordingly, he has been reduced to the utmost poverty and to extreme degradation. However, Christ on the cross "offering prayers and supplications with a loud cry and tears, has been heard for His reverence." Likewise upon the altar He is our mediator with God in the same efficacious manner, so that we may be filled with every blessing and grace.
Source: Mediator Dei (Vatican.va)