There are three distinct Covenants in Scripture:
1. The Flood: God made a Covenant with Noah to never again destroy all living creatures. The ark carried the people and animals to repopulate the earth.
2. The Law: God made a Covenant with Moses and gave him the Law inscribed on stone tablets. The ark carried the law.
3. Redemption: God made a Covenant with mankind through the Death and Resurrection of Christ. Mary was the ark that carried the Lord.
It is plain to many that there are three Covenants and three arks.
Oh...silly me! I thought your post had something to do with the thread topic. My bad.