This form was approved by Pope St. Pius X on May 19, 1908 and is required as such to gain the indulgences. Thus, it cannot be modified. It is recited kneeling by both the priest and the family. If a priest is not present, it is led by the head of the household.
Act of Consecration of the Family to the Sacred Heart of Jesus
O Sacred Heart of Jesus, Who didst make known to St. Margaret Mary Thine ardent desire to reign over Christian families, behold us assembled here today to proclaim Thine absolute dominion over our home.
Henceforth we purpose to lead a life like unto Thine, so that amongst us may flourish the virtues for which Thou didst promise peace on earth, and for this end we will banish from our midst the spirit of the world which Thou dost abhor so much.
Thou wilt reign over our understanding by the simplicity of our faith. Thou wilt reign over our hearts by an ardent love for Thee; and may the flame of this love be ever kept burning in our hearts by the frequent reception of the Holy Eucharist.
Deign, O Divine Heart, to preside over our meetings, to bless our undertakings, both spiritual and temporal, to banish all worry and care, to sanctify our joys, and soothe our sorrows. If any of us should ever have the misfortune to grieve Thy Sacred Heart, remind him of Thy goodness and mercy towards the repentant sinner.
Lastly, when the hour of separation will sound, and death will plunge our home into mourning, then shall we all, and every one of us, be resigned to Thy eternal decrees, and seek consolation in the thought that we shall one day be reunited in Heaven, where we shall sing the praises and blessings of Thy Sacred Heart for all eternity.
May the Immaculate Heart of Mary, and the glorious Patriarch St. Joseph, offer Thee this our Consecration, and remind us of the same all the days of our life. Glory to the Divine Heart of Jesus, our King and our Father. Amen.
Learn how to do an Enthronment of the Sacred Heart of Jesus in your home by following the Sacred Heart of Jesus Enthronement Ceremony in 12 Steps.
You can also learn more about the history of the Sacred Heart of Jesus devotion here.