This refers to Ezekiel's wife. Yahweh refers to Ezekiel by the part of his body he uses to see his wife. Alternate translation: "your wife, whom you love very much, from" (See: [[rc://en/ta/man/translate/figs-synecdoche]])
These phrases mean basically the same thing and emphasize that Ezekiel is not to cry about his wife dying. Alternate translation: "you must not mourn nor weep" (See: [[rc://en/ta/man/translate/figs-parallelism]])