Yes, that would be personification exactly. It starts as soon as Justice has the gardener refer to death as "he," and says that he "stood there." Any time a writer gives an inanimate object (or, in this case, abstract idea) human identity, that's personification.
Since Death is capitalized, there is personification being used...
i wanted gto know when he had sad that? i have the poem here rite infron of me saying "sir, i encountered death just now amoung our roses. thin as a sythe he stoodthyere. i knew him by his pictures, he had on his black coat, black gloves and a broad black hat" thank you for reading this comment.