John Paul II in  Message on the centenary of the consecration of mankind to the Sacred Heart of Jesus (1999), in  L'Osservatore Romano, 12 June 1999.

In facing the challenge of the new evangelization, the Christian who looks upon the Heart of Christ and consecrates himself as well as his brothers and sisters to him, the Lord of time and history, rediscovers that he is the bearer of his light. Motivated by this spirit of service, he cooperates in opening to all human beings the prospect of being raised to their own personal and communal fullness. "From the Heart of Christ, man's heart learns to know the genuine and unique meaning of his life and of his destiny, to understand the value of an authentically Christian life, to keep himself from certain perversions of the human heart, and to unite the filial love of God with love of neighbour" ( Message to the Society of Jesus, 5 October 1986;  L'Osservatore Romano English edition, 27 October 1986, p. 7).
 

Prayer:

Place a picture or statue of the Sacred Heart in a conspicuous place in the home, or in the place of honor on the family altar. In the evening the whole family gathers there before the altar on which a number of candles (the baptismal candles may be used) are lighted as symbols of faith and love of the members for the Sacred Heart of Jesus. Here is the official form for the private devotion of the Enthronement.

 

O Most Sacred Heart of Jesus, Thou didst reveal to the blessed Margaret Mary Thy desire to rule over Christian families; behold, in order to please Thee, we stand before Thee this day, to proclaim Thy full sovereignty over our family. We desire henceforth to live Thy life, we desire that the virtues, to which Thou hast promised peace on earth, may flower in the bosom of our family; we desire to keep far from us the spirit of the world, which Thou hast condemned. Thou art King of our minds by the simplicity of our faith; Thou art King of our hearts by our love of Thee alone, with which our hearts are on fire and whose flame we shall keep alive by frequently receiving the Holy Eucharist. Be pleased, O Sacred Heart, to preside over our gathering together, to bless our spiritual and temporal affairs, to ward off all annoyance from us, to hallow our joys and comfort our sorrows. If any of us has ever been so unhappy as to fall into the misery of displeasing Thee, grant that he may remember, O Heart of Jesus, that Thou art full of goodness and mercy toward the repentant sinner. And when the hour of separation strikes and death enters our family circle, whether we go or whether we stay, we shall all bow humbly before Thine eternal decrees. This shall be our consolation, to remember that the day will come, when our entire family, once more united in heaven, shall be able to sing of Thy glory and Thy goodness forever. May theImmaculate Heart of Mary and the glorious Patriarch St. Joseph vouchsafe to offer Thee this our act of consecration, and to keep the memory thereof alive in us all the days of our lives.

Glory to the Heart of Jesus, our King and Our Father!

 

Prayer Source: How to Make Your House a Home by Rev. Bernard Stokes, O.F.M., Family Life Bureau, Washington D.C., 1955