Munificentissimus Deus §26 — Vatican.va English translation of the Apostolic Constitution Munificentissimus Deus (1 November 1950) (official text, quoted at the cited paragraph)
26. Often there are theologians and preachers who, following in the footsteps of the holy Fathers, have been rather free in their use of events and expressions taken from Sacred Scripture to explain their belief in the Assumption. Thus, to mention only a few of the texts rather frequently cited in this fashion, some have employed the words of the psalmist: "Arise, O Lord, into your resting place: you and the ark, which you have sanctified"; and have looked upon the Ark of the Covenant, built of incorruptible wood and placed in the Lord's temple, as a type of the most pure body of the Virgin Mary, preserved and exempt from all the corruption of the tomb and raised up to such glory in heaven. Treating of this subject, they also describe her as the Queen entering triumphantly into the royal halls of heaven and sitting at the right hand of the divine Redeemer. Likewise they mention the Spouse of the Canticles "that goes up by the desert, as a pillar of smoke of aromatical spices, of myrrh and frankincense" to be crowned. These are proposed as depicting that heavenly Queen and heavenly Spouse who has been lifted up to the courts of heaven with the divine Bridegroom.
This text is under copyright; the cited paragraph is quoted for study, with a link to the full document. Translation: Vatican.va English translation of the Apostolic Constitution Munificentissimus Deus (1 November 1950).
Why Pitre cites it
The Fathers 'looked upon the Ark of the Covenant, built of incorruptible wood and placed in the Lord's temple, as a type of the most pure body of the Virgin Mary, preserved and exempt from all the corruption of the tomb.' The Ark typology in the definition of the Assumption.
Notes
Paragraph number 26 kept as on the page. Footnote numbers (20)–(23) removed.