Ark is picture of Us
The early Hebrew language was Paleo. Letters were pictures. This is why many stories and teachings are a picture we are to see. Take the Ark of the Covenant, it contained the 10 Commandments, or Covenant.
On top of the Ark was a Mercy Seat. There the Spirit of God was on top of the Ark, that had the Covenant inside. Blood was taken into the Most Holy Place, to Atone for the sin's or breaking of the Covenant.
Now we are to be the Ark. It's our bodies that is to contain the New Covenant. It was Atoned with Messiah's blood. His Mercy and Spirit is over us like God's was over the Mercy Seat. He is the head of the Congregation.