The heart as a symbol of love dates back to ancient times and the writings of philosophers. In the Middle Ages (12th to early 14th centuries), the heart appeared in popular artwork of the time, gradually finding a place in many religious representations associated with Christ. In the Renaissance period (late 14th to 17th centuries), depictions of references to the “Sacred Heart of Jesus” became commonplace.
Today, devotion to the Sacred Heart of Jesus is one of the most popular Catholic traditions. It is rooted in Christ’s human incarnation as well as the fullness of his love for humankind. The “Heart” of Jesus — True God and True Man — represents his Divine and Human compassion and mercy.