Unlimited is the effectiveness of the God-Man's Blood - just as unlimited as the love that impelled him to pour it out for us, first at his circumcision eight days after birth, and more profusely later on in his agony in the garden, in his scourging and crowning with thorns, in his climb to Calvary and crucifixion, and finally from out of that great wide wound in his side which symbolizes the divine Blood cascading down into all the Church's sacraments. Such surpassing love suggests, nay demands, that everyone reborn in the torrents of that Blood adore it with grateful love.
an Apostolic Letter written by Blessed Pope John XXIII. May we take this month which also begins with the feast of the Sacred Heart of Jesus, to do as Bl. John XXIII tells us~adore this outpouring of Our Lord's unlimited love with our own grateful love.
You can read the rest of Bl. Pope John XXII's Apostolic Letter here.
I also wrote more on the connection between the feast of the Sacred Heart and the Precious Blood of Christ over at Community of Catholic Bloggers.
As is my custom each month, you can find prayers for this month's devotion on my left sidebar.