#I am weary of life

Rebekah is exaggerating to emphasize how upset she is about the Hittite women that Esau married. AT: "I am terribly upset" (See: [[:en:ta:vol2:translate:figs_hyperbole]])

#the daughters of Heth

"these Hittite women" or "descendants of Heth"

#like these women, some of the daughters of the land

The phrase "daughters of the land" means the local females. AT: "like these women who live in this land" (See: [[:en:ta:vol1:translate:figs_idiom]])

#what good will my life be to me?

Rebekah uses a question to emphasize how upset she would be if Jacob marries a Hittite woman. AT: "My life will be awful!" (See: [[:en:ta:vol1:translate:figs_rquestion]])