We may postpone it, we may tame its violence, but death is still there waiting for us. Death always waits. The door of the hearse is never closed. Dairy farmer and sales executive live in death's shadow, with Nobel prize winner and prostitute, mother, infant, teen, old man. The hearse stands waiting for the surgeon who transplants a heart as well as the hopeful recipient, for the funeral director as well as the corpse he manipulates.
Death spares none.
What Paul is about to state enhances the eternal, invisible things which he had mentioned in that verse. And, furthermore, Paul states that he knows that what he is about to relate is a fact. He knows it on the basis of his faith in God. Paul uses two picturesque terms to describe his present body. He first calls it his earthly tent.