Read what Paul VI says is the one mystery to understand the whole of Christianity

Blessed Paul VI, on Christmas of 1971, said: “God could have come wrapped in glory, splendor, light and power, to instill fear, to make us rub our eyes in amazement. But instead he came as the smallest, the frailest and weakest of beings. Why? So that no one would be ashamed to approach him, so that no one would be afraid, so that all would be close to him and draw near him, so that there would be no distance between us and him. God made the effort to plunge, to dive deep within us, so that each of us, each of you, could speak intimately with him, trust him, draw near him and realize that he thinks of you and loves you … He loves you! Think about what this means! If you understand this, if you remember what I am saying, you will have understood the whole of Christianity.”