1)
Why does the Torah refer to Calev ben Yefuneh as "ha'Kenizi"?
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Rashi and R. Bachye (citing Sotah 11b): Because he was the stepson of K'naz, from whom his mother bore Osniel. 1
1
See Sifsei Chachamim. Moshav Zekenim (34:19): And this explains why the Pasuk in Yehoshua 15:17, refers to Osniel ben K'naz as Calev's brother.
