From New Advent http://www.newadvent.org/cathen/01721a.htm
“THE ARK IN CATHOLIC TRADITION
Catholic tradition, led by the Fathers of the Church, has considered the Ark of the Covenant as one of the purest and richest symbols of the realities of the New Law. It signifies, in the first place, the Incarnate Word of God. “Christ himself”, says St. Thomas Aquinas, “was signified by the Ark. For in the same manner as the Ark was made of setim wood, so also was the body of Christ composed of the most pure human substance. The Ark was entirely overlaid with gold, because Christ was filled with wisdom and charity, which gold symbolizes. In the Ark there was a golden vase: this represents Jesus’ most holy soul containing the fulness of sanctity and the godhead, figured by the manna. There was also Aaron’s rod, to indicate the sacerdotal of Jesus Christ priest forever. Finally the stone tables of the Law were likewise contained in the Ark, to mean that Jesus Christ is the author of the Law”. To these point touched by the Angel of the Schools, it might be added that the Ascension of Christ to heaven after His victory over death and sin is figured by the coming up of the Ark to Sion. St. Bonaventure has also seen in the Ark a mystical representation of the Holy Eucharist. In like manner the Ark might be very well regarded as a mystical figure of the Blessed Virgin, called by the Church the “Ark of the Covenant” Faederis Arca.
Thank you for participating... but I’m a little confused how you think that answers the question...?