Using this reasoning, as the HS indwells believers, we also are divine vessels carrying God around. Perhaps we can be the ark of the covenant.
Although very crudely stated, it is not incorrect at its core. Compare Luke 11:28. We venerate saints because we can become saints. We venerate Mary because we can become custodians of the Word in our walk of faith.
Mary wasn't the ark of the covenant, and Jesus isn't either.
he is the mediator of the new covenant, with his blood.
Hebrews 12:24 And to Jesus the mediator of the new covenant, and to the blood of sprinkling, that speaketh better things than that of Abel.