106 Once this essential truth has been established we understand that the Heart of Jesus is the heart of a divine Person, the Word Incarnate, and by it is represented and, as it were, placed before our gaze all the love with which He has embraced and even now embraces us. Consequently, the honor to be paid to the Sacred Heart is such as to raise it to the rank - so far as external practice is concerned - of the highest expression of Christian piety. For this is the religion of Jesus which is centered on the Mediator who is man and God, and in such a way that we cannot reach the Heart of God save through the Heart of Christ, as He Himself says: "I am the Way, the Truth and the Life. No one cometh to the Father save by Me."(107)
Source: Haurietis Aquas (Vatican.va)