19 But after We have paid Our debt of thanks to the Eternal God, We wish to urge on you and on all Our beloved children of the Church a more earnest consideration of those principles which take their origin from Scripture and the teaching of the Fathers and theologians and on which, as on solid foundations, the worship of the Sacred Heart of Jesus rests. We are absolutely convinced that not until we have made a profound study of the primary and loftier nature of this devotion with the aid of the light of the divinely revealed truth, can we rightly and fully appreciate its incomparable excellence and the inexhaustible abundance of its heavenly favors. Likewise by devout meditation and contemplation of the innumerable benefits produced from it, we will be able to celebrate worthily the completion of the first hundred years since the observance of the feast of the Sacred Heart of Jesus was extended to the Universal Church.
Source: Haurietis Aquas (Vatican.va)