How does Thomas Lynch use imagery in The Undertaking: Life Studies from the Dismal Trade?

Imagery:

"Where choice is enshrined we must suffer the choices. Where life is sacred we must suffer the life."

"Both coffins and caskets are boxed for the dead. Both are utterly suitable to the task. Both cost more than most other boxes. It's because of the bodies we put inside them. The bodies of mothers and fathers and sons, daughters and sisters and brothers and friends, the ones we knew and loved or knew and hated, or hardly knew at all, but know someone who knew them and is left to grieve."