3. birth . . . nativity--thy origin and birth; literally, "thy diggings" (compare Isa 51:1) "and thy bringings forth."
      of . . . Canaan--in which Abraham, Isaac, and Jacob sojourned before going to Egypt, and from which thou didst derive far more of thy innate characteristics than from the virtues of those thy progenitors (Eze 21:30).
      an Amorite . . . an Hittite--These, being the most powerful tribes, stand for the whole of the Canaanite nations (compare Jos 1:4; Am 2:9), which were so abominably corrupt as to have been doomed to utter extermination by God (Le 18:24, 25, 28; De 18:12). Translate rather, "the Amorite . . . the Canaanite," that is, these two tribes personified; their wicked characteristics, respectively, were concentrated in the parentage of Israel (Ge 15:16). "The Hittite" is made their "mother"; alluding to Esau's wives, daughters of Heth, whose ways vexed Rebekah (Ge 26:34, 35; 27:46), but pleased the degenerate descendants of Jacob, so that these are called, in respect of morals, children of the Hittite (compare Eze 16:45).

JFB.