The Great Promise of the Nine First Fridays of the month

Source: District of Canada

The practice of the devotion of the nine first Fridays of the month has its origin in the "great promise" of Jesus to St. Margaret Mary Alacoque: 

“I promise you in the excessive mercy of My Heart that Its all powerful love will grant to all those who receive Holy Communion on nine first Fridays of the month consecutively the grace of final repentance, and they will not die under My displeasure or without receiving the Sacraments, My Divine Heart making Itself their assured refuge at the last moment.”

With the integral insertion of this promise in the Bull of Canonization of St. Margaret Mary (Acta Apostolicæ Sedis 1920, p. 503), dated May 13, 1920, Pope Benedict XV encouraged the practice of communions on the nine first Fridays of the month, in honor of the Sacred Heart.