Those who undertake this holy slavery should have a special devotion to the great mystery of the Incarnation of the Word (March 25th). Indeed, the Incarnation is the mystery proper of this practice, inasmuch as it is a devotion inspired by the Holy Ghost: first, to honor and imitate the ineffable dependence which God the Son was pleased to have on Mary, for His Father’s glory and our salvation—which dependence particularly appears in this mystery, where Jesus is a captive and a slave in the bosom of the divine Mary, and depends on her for all things; secondly, to thank God for the incomparable graces He has given Mary, and particularly for having chosen her to be His most holy Mother, which choice was made in this mystery. These are the two principal ends of the slavery of Jesus in Mary.