MIRAE CARITATIS (On the Holy Eucharist) Pope Leo XIII - PART 13

18. Moreover there is another twofold fruit which we may and must derive from this great Sacrifice. The heart is saddened when it considers what a flood of wickedness, the result - as We have said - of forgetfulness and contempt of the divine Majesty, has inundated the world. It is not too much to say that a great part of the human race seems to be calling down upon itself the anger of heaven; though indeed the crop of evils which has grown up here on earth is already ripening to a just judgment. 

Here then is a motive whereby the faithful may be stirred to a devout and earnest endeavour to appease God the avenger of sin, and to win from Him the help which is so needful in these calamitous times. And they should see that such blessings are to be sought principally by means of this Sacrifice. For it is only in virtue of the death which Christ suffered that men can satisfy, and that most abundantly, the demands of God's justice, and can obtain the plenteous gifts of His clemency. And Christ has willed that the whole virtue of His death, alike for expiation and impetration, should abide in the Eucharist, which is no mere empty commemoration thereof, but a true and wonderful though bloodless and mystical renewal of it.