42 However, even though the Word of God took to Himself a true and perfect human nature, and made and fashioned for Himself a heart of flesh, which, no less than ours could suffer and be pierced, unless this fact is considered in the light of the hypostatic and substantial union and in the light of its complement, the fact of man' s redemption, it can be a stumbling block and foolishness to some, just as Jesus Christ, nailed to the Cross, actually was to the Jewish race and to the Gentiles.(41)
Source: Haurietis Aquas (Vatican.va)