101 The Church, the teacher of men, has therefore always been convinced from the time she first published official documents concerning the devotion to the Sacred Heart of Jesus that its essential elements, namely, acts of love and reparation by which God's infinite love for the human race is honored, are in no sense tinged with so-called "materialism" or tainted with the poison of superstition. Rather, this devotion is a form of piety that fully corresponds to the true spiritual worship which the Savior Himself foretold when speaking to the woman of Samaria: "The hour cometh, and now is, when the true adorers shall adore the Father in spirit and in truth. For the Father also seeketh such to adore Him. God is a spirit; and they that adore Him must adore Him in spirit and in truth."(104)
Source: Haurietis Aquas (Vatican.va)