Gen 38:5 | KD | STEP | There Judah married the daughter of Shuah, a Canaanite, and had three sons by her: Ger (ער), Onan, and Shelah. The name of the place is mentioned when the last is born, viz., Chezib or Achzib ( ; Mic 1:14), in the southern portion of the lowland of Judah, that the descendants of Shelah might know the birth-place of their ancestor. This was unnecessary in the case of the others, who died childless.

‏ Genesis 38:5

There Judah married the daughter of Shuah, a Canaanite, and had three sons by her: Ger (ער), Onan, and Shelah. The name of the place is mentioned when the last is born, viz., Chezib or Achzib (Jos 15:44; Mic 1:14), in the southern portion of the lowland of Judah, that the descendants of Shelah might know the birth-place of their ancestor. This was unnecessary in the case of the others, who died childless.