The First Friday of each month is dedicated to the Sacred Heart of Jesus, a devotion specifically promoted by St. Margaret Mary Alacoque.
One of the many ways to honor this day is to pray a prayer in adoration and love of the Sacred Heart.
Below is a traditional prayer prayed on First Fridays.
I adore Thee, I love Thee, I praise Thee, I cry to Thee for mercy, I return Thee thanks, I invoke Thee and confide myself entirely to Thee, O most holy and adorable Heart of my Lord and Savior Jesus Christ, who for the salvation of us all didst submit Thyself to the rigors of Divine Justice, and didst voluntarily accept a birth accompanied with poverty, sorrow and contempt, a life of labor and contradictions, but of kindness for all, and a death full of opprobrium, confusion and sorrow, and who, in fine, for the love of those who wish to be saved through Thy divine charity, dost remain in the Blessed Sacrament of the altar to the end of time. Accomplish, O most adorable Heart, Thy wishes in my poor and miserable heart, which I dedicate and consecrate to Thee forever. Grant that it may live in the sentiments of love and gratitude which it owes Thee, that it may at all times breathe only Thy honor and glory, in order that it may expire in the waters of perfect contrition. Amen.