The Ark of the Covenant contained the Torah, the written Word of God. To the Jews the Torah is more than just written words, it is the embodiment of the Living God. Mary consented to be filled with the Holy Spirit and thus became the Ark of the New Covenant in that she contained and gave birth to Jesus, the Incarnate Word of God. Jesus by his life, passion, death, and ressurection enables us to receive the gift of the Holy Spirit. We who are baptised are filled with the Holy spirit and thus enabled to be little Arks of the New Covenant: by our living in the covnant of our Baptism we continue the Incarnation of the Word right here, right now.